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Wiedeking M, Goriely S. Photon strength functions and nuclear level densities: invaluable input for nucleosynthesis. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2024; 382:20230125. [PMID: 38910403 DOI: 10.1098/rsta.2023.0125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 01/22/2024] [Indexed: 06/25/2024]
Abstract
The pivotal role of nuclear physics in nucleosynthesis processes is being investigated, in particular the intricate influence of photon strength functions (PSFs) and nuclear level densities (NLDs) on shaping the outcomes of the i-, r- and p-processes. Exploring diverse NLD and PSF model combinations uncovers large uncertainties for (p,[Formula: see text]), (n,[Formula: see text]) and ([Formula: see text],[Formula: see text]) rates across many regions of the nuclear chart. These lead to potentially significant abundance variations of the nucleosynthesis processes and highlight the importance of accurate experimental nuclear data. Theoretical insights and advanced experimental techniques lay the ground work for profound understanding that can be gained of nucleosynthesis mechanisms and the origin of the elements. Recent results further underscore the effect of PSF and NLD data and its contribution to understanding abundance distributions and refining knowledge of the intricate nucleosynthesis processes. This article is part of the theme issue 'The liminal position of Nuclear Physics: from hadrons to neutron stars'.
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Affiliation(s)
- M Wiedeking
- SSC Laboratory, iThemba LABS, P.O. Box 722 , Somerset West 7129, South Africa
- School of Physics, University of the Witwatersrand , Johannesburg 2050, South Africa
- Nuclear Science Division, Lawrence Berkeley National Laboratory , Berkeley, CA 94720, USA
| | - S Goriely
- Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, Campus de la Plaine CP 226 , Brussels 1050, Belgium
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2
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Hussain M, Mues Genannt Koers L, Spahn I, Spellerberg S, Neumaier B, Qaim SM. Excitation functions of 72Ge(p,xn) 72,71As reactions from threshold up to 45 MeV for production of the non-standard positron emitter 72As. Sci Rep 2024; 14:16724. [PMID: 39030288 PMCID: PMC11271559 DOI: 10.1038/s41598-024-67319-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 07/10/2024] [Indexed: 07/21/2024] Open
Abstract
Nuclear reaction cross sections for the formation of 72As and 71As in proton-induced reactions on enriched 72Ge targets were measured up to 45 MeV utilizing three different cyclotrons at the Forschungszentrum Jülich. The stacked-thin sample activation technique in combination with high-resolution γ-ray spectrometry was used. The major γ-ray peaks of 72As and 71As formed via the 72Ge(p,n)72As and 72Ge(p,2n)71As reactions, respectively, were analyzed. The incident proton energy and flux on a foil were determined using several monitor reactions. Based on integrated counts, irradiation data and the nuclear decay data, the reaction cross sections were measured. All data describe the first measurements. Theoretical nuclear model calculations were then carried out by using the codes TALYS 1.96, EMPIRE 3.2 and ALICE-IPPE. A very good agreement between the measured data and calculated values was found. The new data enabled us to calculate the thick target yields and estimate the radionuclidic impurities for a given energy range. Over the optimum energy range Ep = 14 → 7 MeV, the calculated thick target yield of 72As amounts to 272 MBq/μAh with no 71As impurity at all. The 72Ge(p,n)72As reaction on the enriched 72Ge is thus very suitable for clinical scale production of 72As at a medical cyclotron.
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Affiliation(s)
- Mazhar Hussain
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich (FZJ), 52425, Jülich, Germany.
- Department of Physics, Government College University Lahore (GCUL), Lahore, 54000, Pakistan.
| | - Lucas Mues Genannt Koers
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich (FZJ), 52425, Jülich, Germany
| | - Ingo Spahn
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich (FZJ), 52425, Jülich, Germany.
| | - Stefan Spellerberg
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich (FZJ), 52425, Jülich, Germany
| | - Bernd Neumaier
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich (FZJ), 52425, Jülich, Germany
- Institute of Radiochemistry and Experimental Molecular Imaging, University of Cologne, Cologne, 50937, Germany
| | - Syed M Qaim
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich (FZJ), 52425, Jülich, Germany
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Singh A, Maiti M. Yield estimation of radionuclides from 6,7Li-induced reactions: A comparative analysis for 97,95Ru. Appl Radiat Isot 2024; 208:111287. [PMID: 38508064 DOI: 10.1016/j.apradiso.2024.111287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 02/29/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024]
Abstract
The article reports the production yields of the medically relevant Ru radionuclides and other co-produced radionuclides from 6,7Li-induced reactions on 93Nb target within the 20-45 MeV energy range. The residues were measured employing the activation technique followed by the offline γ-spectroscopy. Statistical model calculations using EMPIRE3.2.2 code are employed to assess the optimized nuclear model parameters and production mechanisms of the residues. As an outcome, new data from 6Li reaction suggests 9720 MBq/C of thick target yield (TTY) for the production of 95Ru with minimal impurities. While 7Li reaction may be relied upon for producing 97Ru, yielding 813 MBq/C TTY within the studied energy range.
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Affiliation(s)
- Ankur Singh
- Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Moumita Maiti
- Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
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4
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Singh RK, Singh NL, Mehta M, Chauhan R, Suryanarayana SV, Makwana R, Nayak BK, Naik H, Varmuza J, Katovsky K. Activation cross section for the (n,2n) and (n,p) reactions on 103Rh, 48Ti and 52Cr from reaction threshold up to 25 MeV energy region. Appl Radiat Isot 2023; 200:110949. [PMID: 37582315 DOI: 10.1016/j.apradiso.2023.110949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/25/2023] [Accepted: 07/15/2023] [Indexed: 08/17/2023]
Abstract
Activation and off-line γ-ray spectrometric methods were used to measure the ground and isomeric state (n,2n) reaction cross section for 103Rh at two different neutron energies. The standard 27Al (n,α)24Na reference reaction was used to normalise neutron flux. The proton beam from the 14UD BARC-TIFR Pelletron facility in Mumbai, India, was utilised to create high-energy quasi-monoenergetic neutrons via the 7Li (p,n) reaction. Statistical model calculations including the level density, pre-equilibrium and optical potential model were performed using the TALYS (ver. 1.95) and EMPIRE (ver. 3.2.3) reaction codes. In addition, because of considerable discrepancies in measured data, the literature (n,p) reaction cross section of 52Cr and 48Ti targets were examined theoretically in the present work. The measured cross sections are discussed and compared with the latest evaluated data of the FENDL-3.2b, CENDL-3.2, TENDL-2019, JENDL-5.0, and ENDF/B-VIII.0 libraries, and experimental data based on the EXFOR compilation. The theoretical investigation of the (n,2n) reaction cross section was performed for the ground and isomeric state for the first time from reaction threshold to 25 MeV energies. The experimental data corresponding to the ground, isomeric state and isomeric ratio were reproduced consistently by the theoretical calculations. The present experimental results are good with certain literature data and theoretical values.
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Affiliation(s)
- R K Singh
- Department of Physics, Faculty of Science, The M. S. University of Baroda, Vadodara, 390002, India.
| | - N L Singh
- Department of Physics, Faculty of Science, The M. S. University of Baroda, Vadodara, 390002, India; Department of Physics, Netaji Subhas University of Technology, Dwarka, Delhi, 110078, India.
| | - Mayur Mehta
- Department of Physics, Faculty of Science, The M. S. University of Baroda, Vadodara, 390002, India; Institute for Plasma Research, Gandhinagar, 382428, India
| | - Rakesh Chauhan
- Department of Physics, Faculty of Science, The M. S. University of Baroda, Vadodara, 390002, India
| | - S V Suryanarayana
- Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Rajnikant Makwana
- Department of Physics, Faculty of Science, The M. S. University of Baroda, Vadodara, 390002, India
| | - B K Nayak
- Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai, India
| | - H Naik
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Jan Varmuza
- Department of Electrical Power Engineering, Brno University of Technology, Brno, 61600, Czech Republic
| | - K Katovsky
- Department of Electrical Power Engineering, Brno University of Technology, Brno, 61600, Czech Republic
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5
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An Z, Qiu W, Jiang W, Yang G, Li X, Liao Z, Zhuang Z, Zhang X, Chen S, Guo C, Xiao E, Fang X, Li X, Wang H, Hu X, Jiang B, Shen W, Wang J, Ren J, Ruan X, Wang D, Zhang SY, Luo W, Zhu Z, Lan H, Cao Z, Ma X, Liu Y, Wang P, Yang Y, Su P, Deng X, He W, Ma Y, Ma C, Wang Y, He P, Tang R, Zhou T, Wang J, Yi H, Zhang Y, Chen Y, Fan R, Gao K, Li Q, Sun K, Tan Z, Gu M, Jing H, Tang J. Measurement of the [Formula: see text]Ta([Formula: see text]) cross sections up to stellar s-process temperatures at the CSNS Back-n. Sci Rep 2023; 13:12657. [PMID: 37542076 PMCID: PMC10403622 DOI: 10.1038/s41598-023-39603-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/27/2023] [Indexed: 08/06/2023] Open
Abstract
The neutron capture cross section of [Formula: see text]Ta is relevant to s-process of nuclear astrophysics, extraterrestrial samples analysis in planetary geology and new generation nuclear energy system design. The [Formula: see text]Ta([Formula: see text]) cross section had been measured between 1 eV and 800 keV at the back-streaming white neutron facility (Back-n) of China spallation neutron source(CSNS) using the time-of-flight (TOF) technique and [Formula: see text] liquid scintillator detectors. The experimental results are compared with the data of several evaluated libraries and previous experiments in the resolved and unresolved resonance region. Resonance parameters are extracted using the R-Matrix code SAMMY in the 1-700 eV region. The astrophysical Maxwell average cross section(MACS) from kT = 5 to 100 keV is calculated over a sufficiently wide range of neutron energies. For the characteristic thermal energy of an astrophysical site, at kT = 30keV the MACS value of [Formula: see text]Ta is 834 ± 75 mb, which shows an obvious discrepancy with the Karlsruhe Astrophysical Database of Nucleosynthesis in Stars (KADoNiS) recommended value 766 ± 15 mb. The new measurements strongly constrain the MACS of [Formula: see text]Ta([Formula: see text]) reaction in the stellar s-process temperatures.
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Affiliation(s)
- Zhendong An
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082 China
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, 999078 China
- CNSA Macau Center for Space Exploration and Science, Macau, 999078 China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China
| | - Weiwei Qiu
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, 999078 China
- CNSA Macau Center for Space Exploration and Science, Macau, 999078 China
| | - Wei Jiang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Gaole Yang
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082 China
| | - Xiankai Li
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082 China
- School of Nuclear Science and Technology, University of South China, Hengyang, 421001 China
| | - Zhengfa Liao
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, 999078 China
- CNSA Macau Center for Space Exploration and Science, Macau, 999078 China
| | - Ziyue Zhuang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, 999078 China
- CNSA Macau Center for Space Exploration and Science, Macau, 999078 China
| | - Xiaoping Zhang
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau, 999078 China
- CNSA Macau Center for Space Exploration and Science, Macau, 999078 China
| | - Shengli Chen
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
| | - Chenchen Guo
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
| | - Erxi Xiao
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
| | - Xiao Fang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 China
| | - Xinxiang Li
- School of Nuclear Science and Technology, University of South China, Hengyang, 421001 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Hongwei Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210 China
| | - Xinrong Hu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Bing Jiang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Wenqing Shen
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210 China
| | - Jincheng Wang
- Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413 China
| | - Jie Ren
- Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413 China
| | - Xichao Ruan
- Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413 China
| | - Dexin Wang
- College of Mathematics and Physics, Inner Mongolia Minzu University, Tongliao, 028000 China
- Institute of Nuclear Physics, Inner Mongolia Minzu University, Tongliao, 028000 China
| | - Su-Yalatu Zhang
- College of Mathematics and Physics, Inner Mongolia Minzu University, Tongliao, 028000 China
- Institute of Nuclear Physics, Inner Mongolia Minzu University, Tongliao, 028000 China
| | - Wen Luo
- School of Nuclear Science and Technology, University of South China, Hengyang, 421001 China
| | - Zhichao Zhu
- School of Nuclear Science and Technology, University of South China, Hengyang, 421001 China
| | - Haoyang Lan
- School of Nuclear Science and Technology, University of South China, Hengyang, 421001 China
| | - Zongwei Cao
- School of Nuclear Science and Technology, University of South China, Hengyang, 421001 China
| | - Xu Ma
- Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413 China
- Shool of Materials Science and Engineering, Xiangtan University, Xiangtan, 411100 China
| | - Yingdu Liu
- Shool of Materials Science and Engineering, Xiangtan University, Xiangtan, 411100 China
| | - Pusen Wang
- Shool of Materials Science and Engineering, Xiangtan University, Xiangtan, 411100 China
| | - Yi Yang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai, 200433 China
| | - Ping Su
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai, 200433 China
| | - Xiangai Deng
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai, 200433 China
| | - Wanbing He
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai, 200433 China
| | - Yugang Ma
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai, 200433 China
| | - Chunwang Ma
- Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang, 453007 China
- School of Physics, Henan Normal University, Xinxiang, 453007 China
| | - Yuting Wang
- Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang, 453007 China
- School of Physics, Henan Normal University, Xinxiang, 453007 China
| | - Pengqin He
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082 China
| | - Renguang Tang
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082 China
| | - Tao Zhou
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082 China
| | - Jing Wang
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082 China
| | - Han Yi
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Yue Zhang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Yonghao Chen
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Ruirui Fan
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Keqing Gao
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Qiang Li
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Kang Sun
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Zhixin Tan
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Minhao Gu
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Hantao Jing
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049 China
- Spallation Neutron Source Science Center, Dongguan, 523803 China
| | - Jingyu Tang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230027 China
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Alhassan E, Rochman D, Vasiliev A, Koning AJ, Ferroukhi H. TENDL-based evaluation and adjustment of p+ 111Cd between 1 and 100 MeV. Appl Radiat Isot 2023; 198:110832. [PMID: 37182393 DOI: 10.1016/j.apradiso.2023.110832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 04/20/2023] [Indexed: 05/16/2023]
Abstract
Proton induced reaction data are needed in the optimization of various radioisotope production routes, among others. In this work, the evaluation of proton-induced reactions on 111Cd between 1 and 100 MeV using the TALYS code system within an iterative Bayesian Monte Carlo (iBMC) framework, is presented. The method involves the simultaneous variation of a large number of nuclear reaction models included in the TALYS code system as well as their parameters. Each random TALYS calculation yields a vector of calculated values of cross section observables as well as the angular distributions, among others, which were compared with corresponding vectors of carefully selected differential experimental data for reaction channels where data were available. The random nuclear data file with the maximum likelihood function value obtained from combining the individual χ2s computed for the considered reaction channels was chosen as the parent vector and the starting point for the generation of a further set of random TALYS calculations. This was repeated multiple times until a targeted convergence of 5% was reached. The final evaluated file was compared with available experimental data from the EXFOR database as well as with the evaluations from the TENDL-2021 and JENDL5.0 libraries, and found to compare favorably.
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Affiliation(s)
- E Alhassan
- Laboratory for Reactor Physics and Thermal-Hydraulics, Paul Scherrer Institute, 5232 Villigen, Switzerland.
| | - D Rochman
- Laboratory for Reactor Physics and Thermal-Hydraulics, Paul Scherrer Institute, 5232 Villigen, Switzerland.
| | - A Vasiliev
- Laboratory for Reactor Physics and Thermal-Hydraulics, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - A J Koning
- Nuclear Data Section, International Atomic Energy Commission (IAEA), Vienna, Austria; Division of Applied Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - H Ferroukhi
- Laboratory for Reactor Physics and Thermal-Hydraulics, Paul Scherrer Institute, 5232 Villigen, Switzerland
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7
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Lewis R, Couture A, Liddick SN, Spyrou A, Bleuel DL, Campo LC, Crider BP, Dombos AC, Guttormsen M, Kawano T, Larsen AC, Lewis AM, Mosby S, Perdikakis G, Prokop CJ, Quinn SJ, Renstrøm T, Siem S. Statistical (n, γ ) cross section model comparison for short-lived nuclei. THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI 2023; 59:42. [PMID: 36915898 PMCID: PMC9998597 DOI: 10.1140/epja/s10050-023-00920-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
UNLABELLED Neutron-capture cross sections of neutron-rich nuclei are calculated using a Hauser-Feshbach model when direct experimental cross sections cannot be obtained. A number of codes to perform these calculations exist, and each makes different assumptions about the underlying nuclear physics. We investigated the systematic uncertainty associated with the choice of Hauser-Feshbach code used to calculate the neutron-capture cross section of a short-lived nucleus. The neutron-capture cross section for 73 Zn (n, γ ) 74 Zn was calculated using three Hauser-Feshbach statistical model codes: TALYS, CoH, and EMPIRE. The calculation was first performed without any changes to the default settings in each code. Then an experimentally obtained nuclear level density (NLD) and γ -ray strength function ( γ SF ) were included. Finally, the nuclear structure information was made consistent across the codes. The neutron-capture cross sections obtained from the three codes are in good agreement after including the experimentally obtained NLD and γ SF , accounting for differences in the underlying nuclear reaction models, and enforcing consistent approximations for unknown nuclear data. It is possible to use consistent inputs and nuclear physics to reduce the differences in the calculated neutron-capture cross section from different Hauser-Feshbach codes. However, ensuring the treatment of the input of experimental data and other nuclear physics are similar across multiple codes requires a careful investigation. For this reason, more complete documentation of the inputs and physics chosen is important. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1140/epja/s10050-023-00920-0.
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Affiliation(s)
- R. Lewis
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 USA
- Present Address: Zeno Power Systems, Inc., Washington, DC USA
| | - A. Couture
- Los Alamos National Laboratory, Los Alamos, NM 87545 USA
| | - S. N. Liddick
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 USA
| | - A. Spyrou
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 USA
| | - D. L. Bleuel
- Lawrence Livermore National Laboratory, Livermore, CA 94550 USA
| | - L. Crespo Campo
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - B. P. Crider
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 USA
| | - A. C. Dombos
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 USA
| | - M. Guttormsen
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - T. Kawano
- Los Alamos National Laboratory, Los Alamos, NM 87545 USA
| | - A. C. Larsen
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - A. M. Lewis
- Department of Nuclear Engineering, University of California Berkeley, Berkeley, CA 94720 USA
- Present Address: Naval Nuclear Laboratory, New York, USA
| | - S. Mosby
- Los Alamos National Laboratory, Los Alamos, NM 87545 USA
| | - G. Perdikakis
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 USA
- Central Michigan University, Mount Pleasant, MI 48859 USA
| | - C. J. Prokop
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 USA
| | - S. J. Quinn
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 USA
| | - T. Renstrøm
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - S. Siem
- Department of Physics, University of Oslo, 0316 Oslo, Norway
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8
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Iwamoto N, Kosako K, Fukahori T. JENDL photonuclear data file 2016. J NUCL SCI TECHNOL 2023. [DOI: 10.1080/00223131.2022.2161657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Nobuyuki Iwamoto
- Nuclear Data Center, Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki, Japan
| | - Kazuaki Kosako
- Institute of Technology, Shimizu Corporation, Tokyo, Japan
| | - Tokio Fukahori
- Fukushima Research Institute, Sector of Fukushima Research and Development, Japan Atomic Energy Agency, Tomioka, Futaba, Fukushima, Japan
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9
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Oflaz U, Sarpün İ, Özdoğan H. Investigation of level density and Gama strength function for photoneutron reaction in medical linacs in Beamline. Appl Radiat Isot 2022; 186:110286. [DOI: 10.1016/j.apradiso.2022.110286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/08/2022] [Indexed: 11/29/2022]
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10
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Bholane G, Ganesapandy T, Phatangare A, Attar F, Dahiwale S, Suryanarayana S, Bhoraskar V, Dhole S. Activation cross section measurements and estimation of photon and neutron induced nuclear reactions for ytterbium isotopes with covariance analysis. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Watanabe S, Minato F, Kimura M, Iwamoto N. Nuclear data generation by machine learning (I) application to angular distributions for nucleon-nucleus scattering. J NUCL SCI TECHNOL 2022. [DOI: 10.1080/00223131.2022.2061622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Shoto Watanabe
- Department of Physics, Hokkaido University, Sapporo, Japan
| | - Futoshi Minato
- Nuclear Data Center, Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
| | - Masaaki Kimura
- Department of Physics, Hokkaido University, Sapporo, Japan
- Nuclear Reaction Data Centre, Hokkaido University, Sapporo, Japan
- RIKEN Nishina Center, Wako, Saitama, Japan
| | - Nobuyuki Iwamoto
- Nuclear Data Center, Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
- Nuclear Reaction Data Centre, Hokkaido University, Sapporo, Japan
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12
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Guo H, Chen W, Ye T, Sun W, Han Y, Cai C. Theoretical calculation of n+235U reaction. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2021.108248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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De Saint Jean C, Tamagno P, Archier P, Noguere G. CONRAD – a code for nuclear data modeling and evaluation. EPJ NUCLEAR SCIENCES & TECHNOLOGIES 2021. [DOI: 10.1051/epjn/2021011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The CONRAD code is an object-oriented software tool developed at CEA since 2005. It aims at providing nuclear reaction model calculations, data assimilation procedures based on Bayesian inference and a proper framework to treat all uncertainties involved in the nuclear data evaluation process: experimental uncertainties (statistical and systematic) as well as model parameter uncertainties. This paper will present the status of CONRAD-V1 developments concerning the theoretical and evaluation aspects. Each development is illustrated with examples and calculations were validated by comparison with existing codes (SAMMY, REFIT, ECIS, TALYS) or by comparison with experiment. At the end of this paper, a general perspective for CONRAD (concerning the evaluation and theoretical modules) and actual developments will be presented.
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14
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Nicholson J, Chebboubi A, Serot O, Kessedjian G, Kim YH, Köster U, Litaize O, Méplan O, Sage C, Ramdhane M. Investigation of fission product isomeric ratios and angular momenta of 132Sn populated in the 241Pu(n th,f) reaction. EPJ WEB OF CONFERENCES 2021. [DOI: 10.1051/epjconf/202125600011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
During an experimental campaign performed at the LOHENGRIN recoil spectrometer of the Institut Laue-Langevin (ILL), a kinetic energy dependence of 132Sn fission product isomeric ratio (IR) has been measured by inducing thermal fission of 241Pu. The IRs are deduced using gamma ray spectrometry in coincidence with the ionisation chamber. To interpret these data, we use the FIFRELIN Monte-Carlo code to simulate the de-excitation of the fission fragments. Combining the IRs with the FIFRELIN calculations, the angular momentum distribution with kinetic energy of the doubly magic nucleus of 132Sn was deduced. This will be compared with the angular momentum distribution obtained for the reaction 235U(nth,f) for 132Sn.
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15
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Kasanda E, Burbadge C, Bildstein V, Turko J, Spyrou A, Höhr C, Mücher D. GEANT4 simulation of a range verification method using delayed γ spectroscopy of a 92Mo marker. Phys Med Biol 2020; 65:245047. [PMID: 33331299 DOI: 10.1088/1361-6560/abbd15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In this work, we propose a novel technique for in-vivo proton therapy range verification. This technique makes use of a molybdenum hadron tumour marker, implanted at a short distance from the clinical treatment volume. Signals emitted from the marker during treatment can provide a direct measurement of the proton beam energy at the marker's position. Fusion-evaporation reactions between the proton beam and marker nucleus result in the emission of delayed characteristic γ rays, which are detected off-beam for an improved signal-to-noise ratio. In order to determine the viability of this technique and to establish an experimental setup for future work, the Monte Carlo package GEANT4 was used in combination with ROOT to simulate a treatment scenario with the new method outlined in this work. These simulations show that the intensity of delayed γ rays produced from competing reactions yields a precise measurement of the range of the proton beam relative to the marker, with sub-millimetre uncertainty.
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Affiliation(s)
- E Kasanda
- Department of Physics, University of Guelph, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada
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16
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Pérez Sánchez R, Jurado B, Méot V, Roig O, Dupuis M, Bouland O, Denis-Petit D, Marini P, Mathieu L, Tsekhanovich I, Aïche M, Audouin L, Cannes C, Czajkowski S, Delpech S, Görgen A, Guttormsen M, Henriques A, Kessedjian G, Nishio K, Ramos D, Siem S, Zeiser F. Simultaneous Determination of Neutron-Induced Fission and Radiative Capture Cross Sections from Decay Probabilities Obtained with a Surrogate Reaction. PHYSICAL REVIEW LETTERS 2020; 125:122502. [PMID: 33016727 DOI: 10.1103/physrevlett.125.122502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/18/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
Reliable neutron-induced-reaction cross sections of unstable nuclei are essential for nuclear astrophysics and applications but their direct measurement is often impossible. The surrogate-reaction method is one of the most promising alternatives to access these cross sections. In this work, we successfully applied the surrogate-reaction method to infer for the first time both the neutron-induced fission and radiative capture cross sections of ^{239}Pu in a consistent manner from a single measurement. This was achieved by combining simultaneously measured fission and γ-emission probabilities for the ^{240}Pu(^{4}He,^{4}He^{'}) surrogate reaction with a calculation of the angular-momentum and parity distributions populated in this reaction. While other experiments measure the probabilities for some selected γ-ray transitions, we measure the γ-emission probability. This enlarges the applicability of the surrogate-reaction method.
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Affiliation(s)
- R Pérez Sánchez
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - B Jurado
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
| | - V Méot
- CEA, DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière sous Conditions Extrêmes, 91680 Bruyères-Le-Châtel, France
| | - O Roig
- CEA, DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière sous Conditions Extrêmes, 91680 Bruyères-Le-Châtel, France
| | - M Dupuis
- CEA, DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière sous Conditions Extrêmes, 91680 Bruyères-Le-Châtel, France
| | - O Bouland
- CEA-Cadarache, DEN/DER/SPRC/LEPh, F-13108 Saint Paul lez Durance, France
| | - D Denis-Petit
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - P Marini
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - L Mathieu
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
| | - I Tsekhanovich
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
| | - M Aïche
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
| | - L Audouin
- Université Paris-Saclay, CNRS/IN2P3, IJC Lab, 91405 Orsay, France
| | - C Cannes
- Université Paris-Saclay, CNRS/IN2P3, IJC Lab, 91405 Orsay, France
| | - S Czajkowski
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
| | - S Delpech
- Université Paris-Saclay, CNRS/IN2P3, IJC Lab, 91405 Orsay, France
| | - A Görgen
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - M Guttormsen
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - A Henriques
- CENBG, CNRS/IN2P3-Université de Bordeaux, Chemin du Solarium, B.P. 120, F-33175 Gradignan, France
| | - G Kessedjian
- Université Grenoble-Alpes, Grenoble INP, CNRS, LPSC-IN2P3, 38000 Grenoble, France
| | - K Nishio
- JAEA, Tokai, Ibaraki 319-1195, Japan
| | - D Ramos
- Université Paris-Saclay, CNRS/IN2P3, IJC Lab, 91405 Orsay, France
| | - S Siem
- Department of Physics, University of Oslo, 0316 Oslo, Norway
| | - F Zeiser
- Department of Physics, University of Oslo, 0316 Oslo, Norway
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17
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Uddin MS, Scholten B, Basunia MS, Sudár S, Spellerberg S, Voyles AS, Morrell JT, Zaneb H, Rios JA, Spahn I, Bernstein LA, Neumaier B, Qaim SM. Accurate determination of production data of the non-standard positron emitter 86Y via the 86Sr(p,n)-reaction. RADIOCHIM ACTA 2020. [DOI: 10.1515/ract-2020-0021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Abstract
In view of several significant discrepancies in the excitation function of the 86Sr(p,n)86g+xmY reaction which is the method of choice for the production of the non-standard positron emitter 86Y for theranostic application, we carried out a careful measurement of the cross sections of this reaction from its threshold up to 16.2 MeV at Forschungszentrum Jülich (FZJ) and from 14.3 to 24.5 MeV at LBNL. Thin samples of 96.4% enriched 86SrCO3 were prepared by sedimentation and, after irradiation with protons in a stacked-form, the induced radioactivity was measured by high-resolution γ-ray spectrometry. The projectile flux was determined by using the monitor reactions natCu(p,xn)62,63,65Zn and natTi(p,x)48V, and the calculated proton energy for each sample was verified by considering the ratios of two reaction products of different thresholds. The experimental cross section data obtained agreed well with the results of a nuclear model calculation based on the code TALYS. From the cross section data, the integral yield of 86Y was calculated. Over the optimum production energy range Ep = 14 → 7 MeV the yield of 86Y amounts to 291 MBq/μA for 1 h irradiation time. This value is appreciably lower than the previous literature values calculated from measured and evaluated excitation functions. It is, however, more compatible with the experimental yields of 86Y obtained in clinical scale production runs. The levels of the isotopic impurities 87mY, 87gY, and 88Y were also estimated and found to be <2% in sum.
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Affiliation(s)
- M. Shuza Uddin
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie , Forschungszentrum Jülich , 52425 Jülich , Germany
- Nuclear Science Division , Lawrence Berkeley National Laboratory , Berkeley , CA , 94720 , USA
- Tandem Accelerator Facilities , INST , Atomic Energy Research Establishment , Savar , Dhaka , Bangladesh
| | - Bernhard Scholten
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie , Forschungszentrum Jülich , 52425 Jülich , Germany
| | - M. Shamsuzzhoha Basunia
- Nuclear Science Division , Lawrence Berkeley National Laboratory , Berkeley , CA , 94720 , USA
| | - Sandor Sudár
- Institute of Experimental Physics , Debrecen University , Debrecen , 4001 , Hungary
| | - Stefan Spellerberg
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie , Forschungszentrum Jülich , 52425 Jülich , Germany
| | - Andrew S. Voyles
- Nuclear Science Division , Lawrence Berkeley National Laboratory , Berkeley , CA , 94720 , USA
| | - Jonathan T. Morrell
- Nuclear Science Division , Lawrence Berkeley National Laboratory , Berkeley , CA , 94720 , USA
| | - Haleema Zaneb
- Nuclear Science Division , Lawrence Berkeley National Laboratory , Berkeley , CA , 94720 , USA
| | - Jesus A. Rios
- Nuclear Science Division , Lawrence Berkeley National Laboratory , Berkeley , CA , 94720 , USA
| | - Ingo Spahn
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie , Forschungszentrum Jülich , 52425 Jülich , Germany
| | - Lee A. Bernstein
- Nuclear Science Division , Lawrence Berkeley National Laboratory , Berkeley , CA , 94720 , USA
| | - Bernd Neumaier
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie , Forschungszentrum Jülich , 52425 Jülich , Germany
| | - Syed M. Qaim
- Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie , Forschungszentrum Jülich , 52425 Jülich , Germany
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18
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Iwamoto N, Nakamura S, Kimura A, Katabuchi T, Rovira G, Hara KY, Iwamoto O. Evaluation of gamma-ray strength function based on measured gamma-ray pulse-height spectra in time-of-flight neutron capture experiments. EPJ WEB OF CONFERENCES 2020. [DOI: 10.1051/epjconf/202023917016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In order to develop an evaluation method of gamma-ray strength function (GSF), neutron capture pulse-height (PH) spectrum of gold was employed, where it was measured with the NaI(Tl) spectrometer of AN-NRI installed at the Material and Life Science Experimental Facility in J-PARC. The neutron capture gamma-ray spectrum of gold was calculated using the nuclear reaction model code CCONE. In order to obtain the information on GSF from the measured data, a gamma-ray response function for the NaI(Tl) spectrometer was calculated by the Monte-Carlo particle-transport simulation code PHITS. As a result, the PH spectrum comparable with measured one was derived by applying the gamma-ray response function to the calculated gamma-ray spectrum. By evaluation with measured PH spectra, we obtained GSF which reasonably explains measured PH spectrum in the continuum region.
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19
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Chen S, Noguere G, Bernard D, De Saint Jean C, Tommasi J. PROFIL-2 Experiment and neutron capture cross sections of Europium isotopes. EPJ WEB OF CONFERENCES 2020. [DOI: 10.1051/epjconf/202023901032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Neutron-induced cross section is one of the key quantities in nuclear physics and nuclear engineering. The integral experiment can give good feedback to the cross sections with low uncertainties. Using the optical model and statistical model, the neutron-induced total and capture cross sections of153Eu are revaluated according to the experimental microscopic total cross sections and the PROFIL-2 integral experiment. The corresponding uncertainties and covariances are determined with the data assimilation method implemented in CONRAD code. On the other hand, the previous interpretation of the PROFIL-2 experiment showed that JEFF-3.1 overestimates the neutron-induced capture cross section of 151 Eu by a factor of 2. Further analysis performed in the present work points out that the large difference between calculation and experimental data is mainly due to the lack of152m1 Eu in ERANOS code, which was used to interpret the PROFIL-2 experiment. The correction of 152m1Eu on the interpretation largely reduces the difference between JEFF-3.1 and PROFIL-2 and shows the agreement between the PROFIL-2 integral experiment and other microscopic measurements. The revaluated neutron-induced total and capture cross sections of 151 Eu and 153Eu correspond well with both the microscopic experimental measurements and the PROFIL-2 integral experiment.
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20
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Olacel A, Borcea C, Boromiza M, Dessagne P, Henning G, Kerveno M, Negret A, Nyman M, Plompen A. Neutron inelastic cross section measurements on 58,60Ni. EPJ WEB OF CONFERENCES 2020. [DOI: 10.1051/epjconf/202023901040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A natural nickel sample was used at the GELINA (Geel Electron LINear Accelerator) neutron source of the European Commission, Joint Research Centre, Geel to measure the neutron inelastic cross sections. The GAINS (Gamma Array for Inelastic Neutron Scattering) spectrometer was employed to detect the emitted γ rays while a 235U fission chamber monitored the neutron flux. We report the preliminary production cross sections corresponding to the first transitions in 58,60Ni in comparison with previously reported data and with TALYS 1.9 calculations performed using the default input parameters.
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21
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Hemalatha M, Patel A, Kailas S. Excitation functions of the Zn(p,xn)Ga reactions. Appl Radiat Isot 2019; 156:108968. [PMID: 31734030 DOI: 10.1016/j.apradiso.2019.108968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/08/2019] [Accepted: 10/28/2019] [Indexed: 10/25/2022]
Abstract
The excitation functions for 64,66,67,68,70Zn(p,n)64,66,67,68,70Ga and 64,66,67,68,70Zn(p,2n)63,65,66,67,69Ga have been calculated for incident proton energies from threshold values to 30 MeV using the statistical model code TALYS-1.6. The (p,n) and (p,2n) cross sections have been calculated using both phenomenological Koning and Delaroche (KD) and semimicroscopic Jeukenne-Lejeune-Mahaux-Bruyeres (JLMB) optical model potentials. The phenomenological back-shifted Fermi gas model (BFM) and microscopic Hartree-Fock (HF) approaches for calculation of level densities have been compared in the present work. The pre-equilibrium process has been treated using exciton model. The sensitivity of cross section data to different models of optical model potential and level density have been investigated. It is found that the (p,n) and (p,2n) cross section calculations with semimicroscopic JLMB optical model potential and microscopic HF level density show agreement with the data. The (p,n) and (p,2n) cross section calculations have been compared with corresponding cross sections from nuclear data library, TENDL-2019. The (p,xn) cross sections obtained will be useful in several applications, particularly, for optimization of production routes for Ga isotopes.
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Affiliation(s)
- M Hemalatha
- Department of Physics, University of Mumbai, Mumbai, 400098, India.
| | - A Patel
- Formerly UM-DAE Centre for Excellence in Basic Sciences, Mumbai, 400098, India
| | - S Kailas
- Bhabha Atomic Research Centre, Mumbai, 400085, India
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22
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Ganesapandy TS, Jeremiah JJ, Dahiwale SS, Dhole SD, Bhoraskar VN. Analysis of neutron induced (n,γ) and (n,2n) reactions on 232Th from reaction threshold to 20 MeV. Appl Radiat Isot 2019; 150:70-78. [PMID: 31125957 DOI: 10.1016/j.apradiso.2019.05.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/08/2019] [Accepted: 05/16/2019] [Indexed: 11/30/2022]
Abstract
Excitation functions for 232Th(n,γ) and 232Th(n,2n) reactions from reaction threshold to 20 MeV were calculated using TALYS-1.9 nuclear code by invoking suitable options for the level densities, optical model potentials, pre-equilibrium effects and γ-ray strength functions. In earlier studies, theoretical plots for 232Th(n,γ) and 232Th(n,2n) reaction cross-sections were obtained by using EMPIRE 3.2 and TALYS 1.9 codes with default parameters, however none of the reported plots could match with the corresponding experimental cross-sections reported in EXFOR data particularly between 14-20 MeV. The results of the present study reveal that by using a combination of specific input parameters in TALYS 1.9 code, the theoretical evaluation of the cross sections favour a higher pre-equilibrium rate for the harder spectrum. Moreover the estimated cross-sections match fairly well with the corresponding experimental data (EXFOR database) as well as with the evaluated data files (ENDF/VII.0, JENDL-4.0). The results of the present study are important for the validation of nuclear model approaches with increased predictive power for (n,xn) cross-sections and particularly for the application of thorium based fuel in Accelerator-Driven Sub-critical System.
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Affiliation(s)
- T S Ganesapandy
- Microtron Accelerator Laboratory, Department of Physics, Savitribai Phule Pune University, Pune, 411007, India; Department of Physics, Madras Christian College, Chennai, 600059, India
| | - J J Jeremiah
- Department of Physics, Madras Christian College, Chennai, 600059, India.
| | - S S Dahiwale
- Microtron Accelerator Laboratory, Department of Physics, Savitribai Phule Pune University, Pune, 411007, India
| | - S D Dhole
- Microtron Accelerator Laboratory, Department of Physics, Savitribai Phule Pune University, Pune, 411007, India
| | - V N Bhoraskar
- Microtron Accelerator Laboratory, Department of Physics, Savitribai Phule Pune University, Pune, 411007, India.
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23
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Şekerci M, Özdoğan H, Kaplan A. An investigation of effects of level density models and gamma ray strength functions on cross-section calculations for the production of 90Y, 153Sm, 169Er, 177Lu and 186Re therapeutic radioisotopes via (n,γ) reactions. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2019-3123] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
One of the methods used to treat different cancer diseases is the employment of therapeutic radioisotopes. Therefore, many clinical, theoretical and experimental studies are being carried out on those radioisotopes. In this study, the effects of level density models and gamma ray strength functions on the theoretical production cross-section calculations for the therapeutic radioisotopes 90Y, 153Sm, 169Er, 177Lu and 186Re in the (n,γ) route have been investigated. TALYS 1.9 code has been used by employing different level density models and gamma ray strength functions. The theoretically obtained data were compared with the experimental data taken from the literature. The results are presented graphically for better interpretation.
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Affiliation(s)
- Mert Şekerci
- Department of Physics , Süleyman Demirel University , 32260 Isparta , Turkey
| | - Hasan Özdoğan
- Department of Biophysics , Akdeniz University , 07070 Antalya , Turkey
| | - Abdullah Kaplan
- Department of Physics , Süleyman Demirel University , 32260 Isparta , Turkey
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24
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Ichihara A. Theoretical calculation of neutron cross sections for 90,91,92,94,96Zr in the incident energy range between 200 keV and 20 MeV. J NUCL SCI TECHNOL 2018. [DOI: 10.1080/00223131.2018.1479989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Akira Ichihara
- Nuclear Data Center, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki, Japan
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25
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Okumura S, Kawano T, Jaffke P, Talou P, Chiba S. 235U(n, f) Independent fission product yield and isomeric ratio calculated with the statistical Hauser–Feshbach theory. J NUCL SCI TECHNOL 2018. [DOI: 10.1080/00223131.2018.1467288] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Shin Okumura
- Laboratory for Advanced Nuclear Energy, Tokyo Institute of Technology, Tokyo, Japan
| | - Toshihiko Kawano
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Patrick Jaffke
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Patrick Talou
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Satoshi Chiba
- Laboratory for Advanced Nuclear Energy, Tokyo Institute of Technology, Tokyo, Japan
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26
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Goriely S, Hilaire S, Péru S. The Gogny-HFB+QRPA dipole strength function and its application to radiative neutron capture cross section. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201817804001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Valuable theoretical predictions of nuclear dipole excitations in the whole chart are of great interest for different nuclear applications, including in particular nuclear astrophysics. Here we extend our large-scale calculations of the E1 and M1 absorption γ-ray strength function obtained in the framework of the axially-symmetric deformed quasiparticle random phase approximation (QRPA) based on the finite-range D1M Gogny force to the determination of the de-excitation strength function. To do so, shell-model calculations of the de-excitation dipole strength function as well as experimental data are considered to provide insight in the low-energy limit and to complement the QRPA estimate phenomenologically. We compare our final prediction of the E1 and M1 strengths with available experimental data at low energies and show that a relatively good agreement can be obtained. Its impact on the average radiative width as well as radiative neutron capture cross section is discussed.
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Chebboubi A, Litaize O, Serot O. Impact of FIFRELIN input parameters on fission observables. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201819301003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Evaluated nuclear data are essential for nuclear reactor studies. In order to significantly improve the precision of nuclear data, more and more fundamental fission models are used in the evaluation processing. Therefore, tests of fission models become a central issue. In this framework, FIFRELIN (FIssion Fragments Evaporation Leading to an Investigation of Nuclear data) is a Monte Carlo code developed in order to modelize fission fragments de-excitation through the emission of neutrons, γ and conversion e-. To be performed, a FIFRELIN calculation relies on several models such as gamma strength function and nuclear level density and of more empirical hypothesis such as total excitation energy repartition or angular momentum given by the fission reaction. Moreover, pre-emission mass yield and kinetic energy distribution per mass are necessary to process the simulation. A set of five free parameters are chosen to reproduce a target observable. Often this observable corresponds to the mean neutron multiplicity for heavy and light fragment. In this work, the impact of the set of parameters on different output observables (neutron emission probability, neutron multiplicity as function of the fission fragment mass) is investigated.
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Guttormsen M, Larsen AC, Midtbø JE, Crespo Campo L, Görgen A, Ingeberg VW, Renstrøm T, Siem S, Tveten GM, Zeiser F, Kirsch LE. Gamma-widths, lifetimes and fluctuations in the nuclear quasi-continuum. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201817806001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Statistical γ-decay from highly excited states is determined by the nuclear level density (NLD) and the γ-ray strength function (γSF). These average quantities have been measured for several nuclei using the Oslo method. For the first time, we exploit the NLD and γSF to evaluate the γ-width in the energy region below the neutron binding energy, often called the quasi-continuum region. The lifetimes of states in the quasi-continuum are important benchmarks for a theoretical description of nuclear structure and dynamics at high temperature. The lifetimes may also have impact on reaction rates for the rapid neutron-capture process, now demonstrated to take place in neutron star mergers.
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Hilaire S, Bauge E, Huu-Tai PC, Dupuis M, Péru S, Roig O, Romain P, Goriely S. Potential sources of uncertainties in nuclear reaction modeling. EPJ NUCLEAR SCIENCES & TECHNOLOGIES 2018. [DOI: 10.1051/epjn/2018014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Nowadays, reliance on nuclear models to interpolate or extrapolate between experimental data points is very common, for nuclear data evaluation. It is also well known that the knowledge of nuclear reaction mechanisms is at best approximate, and that their modeling relies on many parameters which do not have a precise physical meaning outside of their specific implementations in nuclear model codes: they carry both specific physical information, and effective information that is related to the deficiencies of the model itself. Therefore, to improve the uncertainties associated with evaluated nuclear data, the models themselves must be refined so that their parameters can be rigorously derived from theory. Examples of such a process will be given for a wide sample of models like: detailed theory of compound nucleus decay through multiple nucleon or gamma emission, or refinements to the width fluctuation factor of the Hauser-Feshbach model. All these examples will illustrate the reduction in the effective components of nuclear model parameters, through the reduced dynamics of parameter adjustment needed to account for experimental data. The significant progress, recently achieved for the non-fission channels, also highlights the difficult path ahead to improve our quantitative understanding of fission in a similar way: by relying on microscopic theory.
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Isaak J, Savran D, Beck T, Gayer U, Krishichayan, Löher B, Pietralla N, Scheck M, Tornow W, Werner V, Zilges A. Study of photon strength functions via ( γ→, γ′, γ″) reactions at the γ3-setup. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201817803006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states.
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32
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Iwamoto N, Shizuma T. Evaluation of neutron capture cross section on 205Pb with photonuclear data. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201817806004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The neutron capture cross section of long-lived radioactive 205Pb is derived by using the nuclear reaction calculation code CCONE, based on photonuclear data. The present result is smaller than that of TENDL-2015 by a factor of 4. The derived Maxwellian averaged capture cross section (MACS) is the smallest compared to the existing data. The produced amount of 205Pb is explored with a simulated neutron flux in the Pb-Bi eutectic (LBE) target. The continuous use of the system in 25 years creates 205Pb with about 6 kg at maximum in the LBE (including natural Pb of 103 kg). The impact of the derived MACS on the stellar nucleosynthesis is investigated. It is found that the abundance of Tl is slightly enhanced due to the increase in the remaining abundance of 205Pb.
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Oprea A, Glodariu T, Filipescu D, Gheorghe I, Mitu A, Boromiza M, Bucurescu D, Costache C, Cata-Danil I, Florea N, Ghita DG, Ionescu A, Marginean N, Marginean R, Mihai C, Mihai R, Negret A, Nita C, Olacel A, Pascu S, Sotty C, Suvaila R, Stan L, Stroe L, Serban A, Stiru I, Toma S, Turturica A, Ujeniuc S. Absolute cross sections of the 86Sr(α,n) 89Zr reaction at energies of astrophysical interest. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714601016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Dupuis M, Hilaire S, Péru S, Bauge E, Kerveno M, Dessagne P, Henning G. Microscopic modeling of direct pre-equilibrium emission from neutron induced reactions on even and odd actinides. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714612002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Chadwick MB, Young PG. Calculation and Evaluation of Cross Sections and Kerma Factors for Neutrons up to 100 MeV on 16O and 14N. NUCL SCI ENG 2017. [DOI: 10.13182/nse96-a24209] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. B. Chadwick
- University of California, Nuclear Data Group Lawrence Livermore National Laboratory, Liver more, California 94550
| | - P. G. Young
- University of California, Theoretical Division Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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36
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Chadwick MB, Young PG, Chiba S, Frankle SC, Hale GM, Hughes HG, Koning AJ, Little RC, MacFarlane RE, Prael RE, Waters LS. Cross-Section Evaluations to 150 MeV for Accelerator-Driven Systems and Implementation in MCNPX. NUCL SCI ENG 2017. [DOI: 10.13182/nse98-48] [Citation(s) in RCA: 267] [Impact Index Per Article: 38.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. B. Chadwick
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - P. G. Young
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - S. Chiba
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - S. C. Frankle
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - G. M. Hale
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - H. G. Hughes
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - A. J. Koning
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - R. C. Little
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | | | - R. E. Prael
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - L. S. Waters
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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37
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Chadwick MB, Cox LJ, Young PG, Meigooni A. Calculation and Evaluation of Cross Sections and Kerma Factors for Neutrons up to 100 MeV on Carbon. NUCL SCI ENG 2017. [DOI: 10.13182/nse96-a24210] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. B. Chadwick
- University of California, Nuclear Data Group, Lawrence Livermore National Laboratory Livermore, California 94550
| | - L. J. Cox
- University of California, Nuclear Data Group, Lawrence Livermore National Laboratory Livermore, California 94550
| | - P. G. Young
- University of California, Theoretical Division, Los Alamos National Laboratory Los Alamos, New Mexico 87545
| | - A.S. Meigooni
- University of Kentucky, Department of Radiation Medicine, Lexington, Kentucky 40536
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38
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Affiliation(s)
- J. Sáfár
- Hungarian Academy of Sciences, Institute of Isotopes, P.O. Box 77, H-1525 Budapest, Hungary
| | - L. Lakosi
- Hungarian Academy of Sciences, Institute of Isotopes, P.O. Box 77, H-1525 Budapest, Hungary
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39
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Nelson RO, Chadwick MB, Michaudon A, Young PG. High-Resolution Measurements and Calculations of Photon-Production Cross Sections for16O(n,xγ) Reactions Induced by Neutrons with Energies between 4 and 200 MeV. NUCL SCI ENG 2017. [DOI: 10.13182/nse01-a2205] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. O. Nelson
- Los Alamos National Laboratory, Mail Stop H855, LANSCE-3, Los Alamos, New Mexico 87545
| | - M. B. Chadwick
- Los Alamos National Laboratory, Mail Stop H855, LANSCE-3, Los Alamos, New Mexico 87545
| | - A. Michaudon
- Los Alamos National Laboratory, Mail Stop H855, LANSCE-3, Los Alamos, New Mexico 87545
| | - P. G. Young
- Los Alamos National Laboratory, Mail Stop H855, LANSCE-3, Los Alamos, New Mexico 87545
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40
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Fan S, Zhao Z. A Semiempirical Method to Calculate Continuum Gamma-Ray Spectra and Multiplicities from Neutron-Induced Reactions. NUCL SCI ENG 2017. [DOI: 10.13182/nse96-a28584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sheng Fan
- Chinese Nuclear Data Center, Institute of Atomic Energy P.O. Box 275 (41), Beijing 102413, China
| | - Zhixiang Zhao
- Chinese Nuclear Data Center, Institute of Atomic Energy P.O. Box 275 (41), Beijing 102413, China
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41
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Talou P, Kawano T, Young PG, Chadwick MB, MacFarlane RE. Improved Evaluations of Neutron-Induced Reactions on Americium Isotopes. NUCL SCI ENG 2017. [DOI: 10.13182/nse07-a2646] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- P. Talou
- Los Alamos National Laboratory T-16, Nuclear Physics Group Los Alamos, New Mexico 87545
| | - T. Kawano
- Los Alamos National Laboratory T-16, Nuclear Physics Group Los Alamos, New Mexico 87545
| | - P. G. Young
- Los Alamos National Laboratory T-16, Nuclear Physics Group Los Alamos, New Mexico 87545
| | - M. B. Chadwick
- Los Alamos National Laboratory Advanced Simulation and Computing Program Los Alamos, New Mexico 87545
| | - R. E. MacFarlane
- Los Alamos National Laboratory T-16, Nuclear Physics Group Los Alamos, New Mexico 87545
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42
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Koning AJ, Duijvestijn MC, van der Marck SC, Meulekamp RK, Hogenbirk A. New Nuclear Data Libraries for Lead and Bismuth and Their Impact on Accelerator-Driven Systems Design. NUCL SCI ENG 2017. [DOI: 10.13182/nse156-357] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. J. Koning
- Nuclear Research and Consultancy Group P.O. Box 25, 1755 ZG Petten, The Netherlands
| | - M. C. Duijvestijn
- Nuclear Research and Consultancy Group P.O. Box 25, 1755 ZG Petten, The Netherlands
| | - S. C. van der Marck
- Nuclear Research and Consultancy Group P.O. Box 25, 1755 ZG Petten, The Netherlands
| | - R. Klein Meulekamp
- Nuclear Research and Consultancy Group P.O. Box 25, 1755 ZG Petten, The Netherlands
| | - A. Hogenbirk
- Nuclear Research and Consultancy Group P.O. Box 25, 1755 ZG Petten, The Netherlands
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43
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Dashdorj D, Mitchell GE, Becker JA, Agvaanluvsan U, Bernstein LA, Younes W, Garrett PE, Chadwick MB, Devlin M, Fotiades N, Kawano T, Nelson RO. Gamma-Ray Production Cross Sections in Multiple Channels for Neutron-Induced Reaction on 48Ti for En = 1 to 200 MeV. NUCL SCI ENG 2017. [DOI: 10.13182/nse07-a2713] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D. Dashdorj
- North Carolina State University, Raleigh, North Carolina 27695 and Lawrence Livermore National Laboratory, Livermore, California 94551
| | - G. E. Mitchell
- North Carolina State University, Raleigh, North Carolina 27695 and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708
| | - J. A. Becker
- Lawrence Livermore National Laboratory, Livermore, California 94551
| | - U. Agvaanluvsan
- Lawrence Livermore National Laboratory, Livermore, California 94551
| | - L. A. Bernstein
- Lawrence Livermore National Laboratory, Livermore, California 94551
| | - W. Younes
- Lawrence Livermore National Laboratory, Livermore, California 94551
| | | | - M. B. Chadwick
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - M. Devlin
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - N. Fotiades
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - T. Kawano
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - R. O. Nelson
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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44
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Stetcu I, Talou P, Kawano T. Prompt fission neutron and γ ray properties as a function of incident neutron energy. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714604026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Olacel A, Belloni F, Borcea C, Boromiza M, Dessagne P, Henning G, Kerveno M, Negret A, Nyman M, Pirovano E, Plompen A. Neutron inelastic cross section measurements for natTi. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714611014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Chebboubi A, Serot O, Kessedjian G, Litaize O, Blanc A, Bernard D, Faust H, Julien-Laferrière S, Köster U, Letourneau A, Materna T, Méplan O, Mutti P, Rapala M, Sage C. Theoretical investigation of fission fragment kinetic energy distributions in the symmetric mass region for 233U( nth, f). EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714604063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Malatji K, Kheswa B, Wiedeking M, Bello Garrote F, Brits C, Bleuel D, Giacoppo F, Görgen A, Guttormsen M, Hadynska-Klek K, Hagen T, Ingeberg V, Klintefjord M, Larsen A, Nyhus H, Renstrøm T, Rose S, Sahin E, Siem S, Tveten G, Zeiser F. Nuclear level densities and γ-ray strength functions of 180,181Ta and neutron capture cross sections. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714601010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Affiliation(s)
- Keiichi Shibata
- Nuclear Data Center, Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai-mura, Japan
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49
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Rochman D, Leray O, Perret G, Vasiliev A, Ferroukhi H, Koning A. Re-evaluation of the thermal neutron capture cross section of 147 Nd. ANN NUCL ENERGY 2016. [DOI: 10.1016/j.anucene.2016.03.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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50
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Liddick SN, Spyrou A, Crider BP, Naqvi F, Larsen AC, Guttormsen M, Mumpower M, Surman R, Perdikakis G, Bleuel DL, Couture A, Crespo Campo L, Dombos AC, Lewis R, Mosby S, Nikas S, Prokop CJ, Renstrom T, Rubio B, Siem S, Quinn SJ. Experimental Neutron Capture Rate Constraint Far from Stability. PHYSICAL REVIEW LETTERS 2016; 116:242502. [PMID: 27367386 DOI: 10.1103/physrevlett.116.242502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Indexed: 06/06/2023]
Abstract
Nuclear reactions where an exotic nucleus captures a neutron are critical for a wide variety of applications, from energy production and national security, to astrophysical processes, and nucleosynthesis. Neutron capture rates are well constrained near stable isotopes where experimental data are available; however, moving far from the valley of stability, uncertainties grow by orders of magnitude. This is due to the complete lack of experimental constraints, as the direct measurement of a neutron-capture reaction on a short-lived nucleus is extremely challenging. Here, we report on the first experimental extraction of a neutron capture reaction rate on ^{69}Ni, a nucleus that is five neutrons away from the last stable isotope of Ni. The implications of this measurement on nucleosynthesis around mass 70 are discussed, and the impact of similar future measurements on the understanding of the origin of the heavy elements in the cosmos is presented.
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Affiliation(s)
- S N Liddick
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Spyrou
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
| | - B P Crider
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
| | - F Naqvi
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
| | - A C Larsen
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - M Guttormsen
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - M Mumpower
- Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA
| | - R Surman
- Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - G Perdikakis
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
- Central Michigan University, Mount Pleasant, Michigan 48859, USA
| | - D L Bleuel
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550-9234, USA
| | - A Couture
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - L Crespo Campo
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - A C Dombos
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
| | - R Lewis
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - S Mosby
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S Nikas
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
- Central Michigan University, Mount Pleasant, Michigan 48859, USA
| | - C J Prokop
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Renstrom
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - B Rubio
- IFIC, CSIC-Universidad de Valencia, 46071 Valencia, Spain
| | - S Siem
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - S J Quinn
- National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
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