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Combination of k0-IAEA and KayWin for the characterization of neutron flux parameters at Triga Mark II research reactor, Morocco. J Radioanal Nucl Chem 2023. [DOI: 10.1007/s10967-023-08794-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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2
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Hamidatou L, Slamene H, Dbacha B, Aït-Ziane M, Badreddine A, Benaskeur N, Benkharfia H, Alliti M, Attari K, Hachouf M, Djebli K, Lounis-Mokrani Z. Experimental determination and simulation of neutron and gamma flux parameters in horizontal channel for Prompt Gamma Neutron activation analysis implementation at Es-Salam research reactor. Appl Radiat Isot 2021; 174:109759. [PMID: 33965688 DOI: 10.1016/j.apradiso.2021.109759] [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: 11/24/2020] [Revised: 04/25/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
Since 2004, the k0-standardization method has been applied and evaluated in three experimental channels at Es-Salam research reactor of the Algerian Centre de Recherche Nucléaire de Birine (CRNB). The NAA laboratory at CRNB is well involved in the implementation of the Prompt Gamma Neutron Activation Analysis to extend the field of analyses to some additional elements to the NAA method. In the frame work of the PGNAA research project, several works have been carried out in the present study including the experimental and simulation characterization of neutron and gamma flux parameters of the horizontal channel. The absolute and relative neutron fluxes of the studied channel have been determined by using a set of monitors including Al, Au, Cu, Fe and Zr. Furthermore, measurements of gamma and thermal neutron doses have been achieved using LiF: Mg, Ti (TLD 600 and TLD 700) detectors. The gamma dose rate at the experimental channel center position was found to be 0.6 Gy/min·MW. The experimental results obtained in this study have been used as input information for simulations and design of neutron facilities and radiation shielding, which are successfully established by SCALE code. The results were compared in terms of spectral detail and precision and a good agreement has been revealed. The value of the thermal neutron flux was found to be (6.29 ± 0.25) E+08 n/cm2.s which allows the implementation of PGNAA at the Es-Salam research reactor.
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Affiliation(s)
- L Hamidatou
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria.
| | - H Slamene
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - B Dbacha
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | | | | | - N Benaskeur
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - H Benkharfia
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - M Alliti
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - K Attari
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - M Hachouf
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - K Djebli
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
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Di Luzio M, D’Agostino G, Oddone M. Measurement of Høgdahl neutron flux parameters in the SM1 subcritical reactor of the University of Pavia. ANN NUCL ENERGY 2020. [DOI: 10.1016/j.anucene.2020.107762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Neutron and gamma-ray radiation fields characterisation in a 241Am–Be irradiator in view of its use as research testing tool. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Moon JH, Kim SH, Senjlawi Y. Measurement of neutron spectrum parameters for NAA irradiation holes in the Jordan research and training reactor. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06821-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Characterization of dry tube location in KAMINI reactor towards the development of k0-based IM-NAA. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06632-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Vertical variations of flux parameters in irradiation channels at the TRIGA Mark II reactor of Pavia. PROGRESS IN NUCLEAR ENERGY 2019. [DOI: 10.1016/j.pnucene.2019.01.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Johnsen AM, Ünlü K. Neutron activation analysis capabilities and applications at the Penn State Radiation Science and Engineering Center. Forensic Chem 2018. [DOI: 10.1016/j.forc.2017.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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A preliminary test for the application of the k0 standardization method of neutron activation analysis at the Radiochemistry and Spectroscopy Laboratory of the Istituto Nazionale di Ricerca Metrologica. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-017-5694-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Van Do N, Khue PD, Thanh KT, Hien NT, Kim G, Kim K, Shin SG, Kye YU, Cho MH. Thermal neutron cross-section and resonance integral of the 152 Sm(n,γ) 153 Sm reaction induced by pulsed neutrons. Radiat Phys Chem Oxf Engl 1993 2017. [DOI: 10.1016/j.radphyschem.2017.03.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Studies on neutron spectrum characterization for the Pneumatic Fast Transfer System (PFTS) of KAMINI reactor. Appl Radiat Isot 2017; 124:49-55. [DOI: 10.1016/j.apradiso.2017.03.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 03/10/2017] [Indexed: 11/21/2022]
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12
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Measurement of the neutron flux parameters f and α at the Pavia TRIGA Mark II reactor. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5191-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Son PN, Tan VH. Measurement of neutron energy spectrum at the radial channel No. 4 of the Dalat reactor. SPRINGERPLUS 2016; 5:863. [PMID: 27386312 PMCID: PMC4920744 DOI: 10.1186/s40064-016-2585-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 06/15/2016] [Indexed: 11/29/2022]
Abstract
Introduction Several compositions of neutron filters have been installed at the channel No. 4 of the Dalat research reactor to produce quasi-monoenergetic neutron beams. However, this neutron facility has been proposed to enhance the quality of the experimental instruments, and to characterize the neutron spectrum parameters for new filtered neutron beams of 2 keV, 24 keV, 59 keV and 133 keV. Case description In order to meet the demand of neutron spectrum information for calculation and design of filtered neutron facilities at the Dalat nuclear research reactor (DNRR), the experimental determinations of neutron flux and energy spectrum, up to 8 MeV, has been performed at the inner entrance of the horizontal channel No. 4 from the core of DNRR. The Westcott neutron fluxes as well as the α-parameter that represents the deviation of epithermal neutron distribution from the 1/E law were measured by applying the cadmium ratio and the multi-foils activation methods. The fast neutron spectrum was measured based on the iterative adjustment procedure with threshold reactions. Discussion and evaluation A set of pure metal thin foils with the diameter of 1.27 cm and thickness of 0.125 mm were used as threshold detectors to measure the integrated fluxes, and a calculation procedure on iterative adjustment was implemented to derive the differential neutron energy spectrum from the integrated values. Conclusions The neutron fluxes and spectrum parameters were characterized with the measured values of 4.80 × 109, 1.98 × 107, 5.06 × 108 cm−2 s−1 and 0.0448 for the thermal, epithermal, fast neutron fluxes and the α-shape factor, respectively. The present result has been significantly applied to the input data for the Monte Carlo simulations in the developments of filtered mono-energetic neutron beam facility at the institute.
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Affiliation(s)
- Pham Ngoc Son
- Nuclear Research Institute, 01-Nguyen Tu Luc, Dalat, Vietnam
| | - Vuong Huu Tan
- Vietnam Agency for Radiation and Nuclear Safety, 113-Tran Duy Hung, Ha Noi, Vietnam
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Şahin D, Ünlü K, Ivanov K. Neutronic Analysis of the PSBR Using a Burnup-Coupled MCNP Simulation with MURE. NUCL TECHNOL 2016. [DOI: 10.13182/nt15-110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Implementation of k0-INAA standardisation at ITU TRIGA Mark II research reactor, Turkey based on k0-IAEA software. Radiat Phys Chem Oxf Engl 1993 2016. [DOI: 10.1016/j.radphyschem.2015.11.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Experimental determination of Q 0 factors and effective resonance energies with a multi-channel approach: the α-vector method. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3276-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Li X, Lierse von Gostomski C. Applications of k 0 NAA at FRM II with high f values. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3072-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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18
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19
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Jasan RC, Invernizzi R, Vermaercke P. Calibration of the B54X channel and implementation of k 0-NAA at the RA3-reactor, Ezeiza, Argentina. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3067-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Karadag M, Budak MG, Yücel H. Measurement of thermal neutron cross section and resonance integral for the 158Gd(n, γ)159Gd reaction by using a 55Mn monitor. ANN NUCL ENERGY 2014. [DOI: 10.1016/j.anucene.2013.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Measurement of thermal neutron cross section and resonance integral for 148Nd(n,γ)149Nd reaction by using a 55Mn monitor. ANN NUCL ENERGY 2013. [DOI: 10.1016/j.anucene.2013.06.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Karadag M. Thermal neutron cross section and resonance integral measurements for the 133Cs(n,γ)134mCs reaction. ANN NUCL ENERGY 2013. [DOI: 10.1016/j.anucene.2013.06.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Alnour IA, Wagiran H, Ibrahim N, Hamzah S, Wee BS, Elias MS, Karim JA. Determination of neutron flux parameters in PUSPATI TRIGA Mark II Research Reactor, Malaysia. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-2375-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Experimental determination of k 0 , Q 0 , $$ \bar{E}_{r} $$ factors and neutron cross-sections for 41 isotopes of interest in Neutron Activation Analysis. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-2132-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Rao JSB, Senthilvadivu E, Seshadreesan NP, Acharya R, Venkatasubramani CR, Reddy AVR. Characterization of pneumatic fast transfer system irradiation position of KAMINI reactor for k 0-based NAA. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-1724-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Kubešová M, Kučera J. Inconsistencies of neutron flux parameters for k0 standardization in neutron activation analysis determined with the use of Au+Zr and Au+Mo+Cr monitor sets at the LVR-15 reactor in Řež. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-1709-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Koster-Ammerlaan MJJ, Bode P, Winkelman AJM. Photoneutrons from a beryllium reflector: a potential source of problems with Zr-Au flux monitors in k0 standardization based neutron activation analysis. J Radioanal Nucl Chem 2012. [PMID: 26224914 PMCID: PMC4514619 DOI: 10.1007/s10967-011-1241-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The assumption that the shape of the epithermal neutron spectrum can be described, in any research reactor, by the 1/E1+α function is a fundamental starting point of the k0 standardization. This assumption may be questioned from a reactor physics viewpoint. The type of moderator, the existence of neutron reflectors, the additional production of (γ, n) neutrons and resonance capture by construction materials may be different for each reactor, with consequences for the shape of the neutron spectrum. This dependency may explain that various practitioners reported contradicting experiences with the use of Zr–Au flux monitors for the determination of the α-parameter. An objective view on the influence of the design of the reactor and irradiation facility on the shape of the neutron spectrum can be obtained by modeling. This has been applied in the Reactor Institute Delft for reactor configurations in which the irradiation facilities face the fuel elements with the presence of beryllium reflector elements. The Monte Carlo calculations indicate a distortion of the 1/E1+α relationship at the higher energy edge of the epithermal neutron spectrum. This distortion is attributed to the formation and thermalisation of both photoneutrons and (n, 2n) produced fast neutrons in the beryllium, and has a direct impact on the resonance activation of 95Zr, other than represented by the 1/E1+α function. The obtained relationship between neutron flux and neutron energy was also used for estimating the f-value and compared with the value obtained by the Delft Cr–Mo–Au flux monitor.
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Affiliation(s)
- M J J Koster-Ammerlaan
- Reactor Institute Delft, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands
| | - P Bode
- Reactor Institute Delft, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands
| | - A J M Winkelman
- Reactor Institute Delft, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands
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Development and implementation of Høgdahl convention and Westcott formalism for k0-INAA application at Malaysian Nuclear Agency reactor. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1574-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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29
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Experimental determination of effective resonance energies for 158Gd(n,γ)159Gd and 179Hf(n,γ)180mHf reactions. ANN NUCL ENERGY 2011. [DOI: 10.1016/j.anucene.2011.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Mensimah E, Abrefah R, Nyarko B, Fletcher J, Asamoah M. Neutron flux determination in irradiation sites of an Am–Be neutron source at NNRI. ANN NUCL ENERGY 2011. [DOI: 10.1016/j.anucene.2011.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Neutron flux parameters for k0-NAA method at the Malaysian nuclear agency research reactor after core reconfiguration. RADIAT MEAS 2011. [DOI: 10.1016/j.radmeas.2010.11.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Experimental and MCNP calculations of neutron flux parameters in irradiation channel at Es-Salam reactor. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0922-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Soliman M, Mohamed NMA, Gaheen MA, Saad EA, Yousef SK, Sohsah MA. Implementation of k 0-standardization method of the INAA at ETRR-2 research reactor. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0860-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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De Corte F, Moens L, Simonits A. Role of the 1/e1+α Epithermal Neutron Flux Distribution in the K0-Method α-Mapping of Reactor Thetis. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19810900407] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ogawa T, Morev MN, Abe T, Iimoto T, Kosako T, Kimura K, Kinno M. Experimental evaluation of neutron performance in boron-doped low activation concrete. RADIATION PROTECTION DOSIMETRY 2010; 140:89-95. [PMID: 20172934 DOI: 10.1093/rpd/ncq034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Reaction rate distribution in concrete with/without boron dopant up to a thickness of 60 cm was measured using Yayoi fast reactor located at University of Tokyo. The 7 reaction rates such as (197)Au(n,gamma), (59)Co(n,gamma), (115)In(n,n'), (55)Mn(n,gamma), (23)Na(n,gamma), (94)Zr(n,gamma) and (96)Zr(n,gamma) were measured at 12 different depths, and the reduction of the reaction rate as a result of boron doping was quantitatively analysed. These reaction rates were also used to determine epithermal neutron spectrum shape parameter. Monte Carlo simulations of the experimental setup were performed using the MCNP-5 code. Simulated depth profiles of reaction rates and the epithermal neutron spectrum shape parameter agreed with the experimental results with fair accuracy. This experimental results provide useful data to benchmark the accuracy of neutron transport codes in the prediction of transmission and neutron spectrum distortion in boron-doped concrete.
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Affiliation(s)
- T Ogawa
- The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan.
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Sogbadji R, Nyarko B, Akaho E, Abrefah R. Determination of thermal neutron cross-section and resonance integral for the 75As (n, γ)76As reaction by activation method using 55Mn (n, γ)56Mn as a monitor. NUCLEAR ENGINEERING AND DESIGN 2010. [DOI: 10.1016/j.nucengdes.2009.12.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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38
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Determination of α factor of epithermal neutron flux in Dalat reactor, Vietnam, based on neutron spectrum calculated using MCNP code. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0457-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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39
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Abstract
A modified method has been developed for the α determination in the 1/E1+α epithermal neutron spectrum of reactor. It is based on the Cd-covered and without Cd-covered irradiations of two monitors. This method was applied to determine the α value in the channels of Dalat reactor and the results were compared with those obtained by the other methods. It appeared that the results of the modified method were in quite good agreement with those of other methods. It also showed that the modified method was simple in practical uses and a good application in the experiment of α determination in the reactor irradiation channels.
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Affiliation(s)
- Tran Van Hung
- Research and Development Center for Radiation Technology, 202A, Street 11, Linh Xuan Ward, Thu Duc District, HoChiMinh City, Vietnam
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40
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Brockman JD, Peters NJ, Robertson JD. Variation in k0 neutron flux parameters after replacement of the beryllium reflector and graphite wedge at the University of Missouri Research Reactor. J Radioanal Nucl Chem 2009. [DOI: 10.1007/s10967-009-0168-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Determination of k0-values for the reactions 94Zr (n, gamma) 95Zr and 96Zr (n, gamma) 97Zr-97mNb by irradiation in highly thermalized neutron flux. Appl Radiat Isot 2009; 67:2092-6. [PMID: 19501514 DOI: 10.1016/j.apradiso.2009.04.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2009] [Accepted: 04/27/2009] [Indexed: 11/23/2022]
Abstract
Determination of k(0)-factors for zirconium isotopes was performed by co-irradiation of Zr and Au-Al. Due to the highly thermalized irradiation position at FRM-II, interferences from epithermal neutrons were found largely decreased for (96)Zr (n, gamma) (97)Zr-(97m)Nb, the reaction with the highest Q(0)-value in all (n, gamma) reactions. Results showed that, the (95)Zr k(0)-values from this work were the same as the recommended ones. For (97)Zr-(97m)Nb 743.4 keV gamma-line, the new k(0)-value was 2.8% higher compared to the recommended value, which is not a significant difference. These results are helpful in clarifying the suspicion about the Zr k(0)-factors.
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Brockman JD, Robertson JD. Analysis of k0 neutron activation analysis at the University of Missouri Research Reactor. Appl Radiat Isot 2009; 67:1084-8. [PMID: 19231216 DOI: 10.1016/j.apradiso.2009.01.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2008] [Revised: 01/07/2009] [Accepted: 01/12/2009] [Indexed: 10/21/2022]
Abstract
k(0) Instrumental Neutron Activation Analysis (k(0) INAA) was evaluated at the University of Missouri Research Reactor (MURR). The MURR, unlike many other research reactors that employ k(0) INAA, is refueled on a weekly basis. To determine if the neutron spectrum is stable enough for routine k(0) INAA analysis, the neutron spectrum parameters alpha and f were measured over a 9 month period. The average values of f and alpha measured using the Cd ratio multi monitor technique were 57.4+/-4.5 and 0.039+/-0.012, respectively. It was determined that k(0) INAA could be used at the MURR by employing the average value of alpha and f. However, significant measurement bias could occur for elements with high Q(0) values if the true spectral parameters deviate by more than 10% from the average value.
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Affiliation(s)
- J D Brockman
- Department of Chemistry, University of Missouri, 601 S College Ave., Columbia, MO 65211, USA.
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Rajput MU, Maidana NL, Vanin VR, Dias MS, Koskinas MF. Measurement of thermal neutron cross section and resonance integral for the 165Ho(n, γ)166gHo reaction. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2009.1575] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Vermaercke P, Sneyers L, Bruggeman M, De Wispelaere A, De Corte F. Neutron spectrum calibration using the Cd-ratio for multi-monitor method with a synthetic multi-element standard. J Radioanal Nucl Chem 2008. [DOI: 10.1007/s10967-008-1206-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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De Corte F, Demeter A, Xilei L, Moens L, Simonits A, De Wispelaere A, Hoste J. Evaluation of the k0-Method by its Application to (n, γ) RNAA of Geological, Environmental and Clay Reference Materials. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/10256018408545033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- F. De Corte
- a Institute for Nuclear Sciences, State University , Gent, Belgium
- b Research Associate of the National Fund for Scientific Research , Belgium
- c Central Research Institute for Physics , Budapest, Hungary
- d Present address: General Research Institute for Non-Ferrous Metals , Beijing, China
| | - A. Demeter
- a Institute for Nuclear Sciences, State University , Gent, Belgium
- b Research Associate of the National Fund for Scientific Research , Belgium
- c Central Research Institute for Physics , Budapest, Hungary
- d Present address: General Research Institute for Non-Ferrous Metals , Beijing, China
| | - Lin Xilei
- a Institute for Nuclear Sciences, State University , Gent, Belgium
- b Research Associate of the National Fund for Scientific Research , Belgium
- c Central Research Institute for Physics , Budapest, Hungary
- d Present address: General Research Institute for Non-Ferrous Metals , Beijing, China
| | - L. Moens
- a Institute for Nuclear Sciences, State University , Gent, Belgium
- b Research Associate of the National Fund for Scientific Research , Belgium
- c Central Research Institute for Physics , Budapest, Hungary
- d Present address: General Research Institute for Non-Ferrous Metals , Beijing, China
| | - A. Simonits
- a Institute for Nuclear Sciences, State University , Gent, Belgium
- b Research Associate of the National Fund for Scientific Research , Belgium
- c Central Research Institute for Physics , Budapest, Hungary
- d Present address: General Research Institute for Non-Ferrous Metals , Beijing, China
| | - A. De Wispelaere
- a Institute for Nuclear Sciences, State University , Gent, Belgium
- b Research Associate of the National Fund for Scientific Research , Belgium
- c Central Research Institute for Physics , Budapest, Hungary
- d Present address: General Research Institute for Non-Ferrous Metals , Beijing, China
| | - J. Hoste
- a Institute for Nuclear Sciences, State University , Gent, Belgium
- b Research Associate of the National Fund for Scientific Research , Belgium
- c Central Research Institute for Physics , Budapest, Hungary
- d Present address: General Research Institute for Non-Ferrous Metals , Beijing, China
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Budak M, Yücel H, Karadag M, Tan M. Experimental determination of effective resonance energies for the (n,γ) reactions of 71Ga, 75As, 164Dy, 170Er by the cadmium ratio method. ANN NUCL ENERGY 2008. [DOI: 10.1016/j.anucene.2008.01.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Vermaercke P, Robouch P, Sneyers L, De Corte F. Using synthetic multi-element standards (SMELS) for calibration and quality control of the irradiation facilities in the BR1 reactor. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0439-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Experimental determination of the α-shape factor in the 1/E1+α epithermal-isotopic neutron source-spectrum by dual monitor method. ANN NUCL ENERGY 2004. [DOI: 10.1016/j.anucene.2003.10.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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De Corte F. k0-NAA past the turn of the century: problems, concepts, insights, prospects. ACTA ACUST UNITED AC 2003. [DOI: 10.1007/s10582-003-0021-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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De Corte F, van Sluijs R, Simonits A, Kucera J, Smodis B, Byrne AR, De Wispelaere A, Bossus D, Frána J, Horák Z, Jaćimović R. Installation and calibration of Kayzero-assisted NAA in three Central European countries via a Copernicus project. Appl Radiat Isot 2001; 55:347-54. [PMID: 11515659 DOI: 10.1016/s0969-8043(01)00063-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An account is given of the installation and calibration of k0-based NAA--assisted by the DSM Kayzero/Solcoi software package--at the KFKI-AEKI, Budapest, the NPI, Rez and the IJS, Ljubljana. Not only the calibration of the Ge-detectors and the irradiation facilities are discussed, but also other important topics such as gamma-spectrometric hard- and software, QC/QA of the IRMM-530 Al-Au flux monitor and the upgrade of the Kayzero/Solcoi code. The work was performed in the framework of a European Copernicus JRP, coordinated by the Laboratory of Analytical Chemistry, Gent, with DSM Research, Geleen, as the industrial partner.
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Affiliation(s)
- F De Corte
- Ghent University, Institute for Nuclear Sciences, Laboratory of Analytical Chemistry, Gent, Belgium.
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