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Kavun Y, Aydın A, Tel E. A new formulae study for the (n,2p) reaction cross-section systematics at 14-15 MeV. Appl Radiat Isot 2020; 163:109218. [PMID: 32561056 DOI: 10.1016/j.apradiso.2020.109218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/10/2020] [Accepted: 05/03/2020] [Indexed: 11/27/2022]
Abstract
The cross-section calculation systematics for nuclear reactions have great importance in describing the particle-induced excitation of nuclei. In this study, for 14-15 MeV of incident neutron energy, it has been suggested new empirical formulae to describe the (n, 2p) reactions cross sections. The new empirical formulae have been obtained for 29≤A≤159, 29≤A≤103 and 133≤A≤159 mass ranges which are dependent on s=(N-Z)/A asymmetry parameter. The asymmetry parameters have been obtained by modifying the original Levkovski formula. Then, EXFOR data has been studied by applying the least square fitting method and (n, 2p) reactions systematics has been revealed. The statistical dependence (R2) of these data was examined in the 29≤A≤159 total mass range. The calculated results from the obtained formulae have been compared with the literature data. The predictions of our formulae are in good agreement with the EXFOR data for 29≤A≤159 and 29≤A≤103 mass range.
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Affiliation(s)
- Y Kavun
- Kahramanmaras Sutcu Imam University, Vocational School of Health Services, Department of Medical Imaging Techniques, Kahramanmaras, Turkey.
| | - A Aydın
- Kırıkkale University, Faculty of Arts and Sciences, Dept. of Physics, Kırıkkale, Turkey.
| | - E Tel
- Osmaniye Korkut Ata University, Faculty of Arts and Sciences, Dept. of Physics, Osmaniye, Turkey.
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2
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Affiliation(s)
- B. Şarer
- Gazi Universitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, 06500 Ankara, Turkey
| | - M. Günay
- İnönü Universitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Malatya, Turkey
| | - A. Aydin
- Kırıkkale Universitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Kırıkkale, Turkey
| | - E. Tel
- Gazi Universitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, 06500 Ankara, Turkey
| | - A. Arasoglu
- Gazi Universitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, 06500 Ankara, Turkey
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Demirkol I, Tel E, Arasoǧlu A, Özmen A, Şarer B, Acir A, Alkan M. The Neutron Production Cross Sections for Pb, Bi, and Au Targets and Neutron Multiplicity for Nuclear Spallation Reaction Induced by 20- to 1600-MeV Protons. NUCL SCI ENG 2017. [DOI: 10.13182/nse04-a2421] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- I. Demirkol
- Gazi Üniversity, Faculty of Art and Science, Department of Physics Teknikokullar-Besevler Ankara, Turkey
| | - E. Tel
- Gazi Üniversity, Faculty of Art and Science, Department of Physics Teknikokullar-Besevler Ankara, Turkey
| | - A. Arasoǧlu
- Gazi Üniversity, Faculty of Art and Science, Department of Physics Teknikokullar-Besevler Ankara, Turkey
| | - A. Özmen
- Gazi Üniversity, Faculty of Art and Science, Department of Physics Teknikokullar-Besevler Ankara, Turkey
| | - B. Şarer
- Gazi Üniversity, Faculty of Art and Science, Department of Physics Teknikokullar-Besevler Ankara, Turkey
| | - A. Acir
- Gazi Üniversity, Teknik Eğitim Fakültesi, Teknikokullar, Ankara, Turkey
| | - M. Alkan
- Niğde Üniversity, Faculty of Engineering, Niğde, Turkey
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Tel E, Akça S, Sahan M, Depedelen M, Sarpun IH. The Comparison of (n,p), (n,α), (n,2n) and (α,n) Reaction Cross-Sections for 7Li and 9Be Target Nuclei. J Fusion Energ 2016. [DOI: 10.1007/s10894-016-0094-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sarpün I, Tel E, Aydin A, Kaplan A. Preface. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201612800001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Abstract
Abstract
Radiopharmaceuticals are radioactive drugs used for diagnosis or treatment in a tracer quantity with no pharmacological action. The production of radiopharmaceuticals is carried out in the special research centers generally using by the cyclotron systems. Indium-111 is one of the most useful radioisotopes used in nuclear medicine. In this paper, we calculated the production cross sections of 111In radioisotope via 111–114Cd(p,xn) nuclear reactions up to 60 MeV energy. In the model calculations, ALICE/ASH, TALYS 1.6 and EMPIRE 3.2 Malta nuclear reaction code systems were used. The model calculation results were compared to the experimental literature data and TENDL-2014 (TALYS-based) data.
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Affiliation(s)
- A. Kara
- Faculty of Engineering , Department of Nuclear Energy Engineering, Sinop University, 57000, Sinop , Turkey
| | - T. Korkut
- Faculty of Engineering , Department of Nuclear Energy Engineering, Sinop University, 57000, Sinop , Turkey
| | - M. Yiğit
- Faculty of Science and Arts , Department of Physics, Aksaray University, 68100, Aksaray , Turkey
| | - E. Tel
- Faculty of Science and Arts , Department of Physics, Osmaniye Korkut Ata University, Osmaniye , Turkey
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Demir B, Kaplan A, Çapalı V, Sarpün İH, Aydın A, Tel E. Production cross–section calculations of medical 32P, 117Sn, 153Sm and 186,188Re radionuclides used in bone pain palliation treatment. KERNTECHNIK 2015. [DOI: 10.3139/124.110477] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this study, production cross–section calculations of 32P, 117Sn, 153Sm and 186,188Re radionuclides used in bone pain palliation treatment produced by 30Si(d,γ)32P, 118Sn(γ,n)117Sn, 116Sn(n,γ)117Sn, 150Nd(α,n)153Sm, 154Sm(n,2n)153Sm, 152Sm(n,γ)153Sm, 186W(d,2n)186Re, 187Re(γ,n)186Re, 185Re(n,γ)186Re and 187Re(n,γ)188Re reactions have been investigated in the different incident energy range of 0.003–34 MeV. Two-component exciton and generalised superfluid models of the TALYS 1.6 and exciton and generalised superfluid models of the EMPIRE 3.1 computer codes have been used to pre-equilibrium (PEQ) reaction calculations. The calculated production cross–section results have been compared with available experimental results existing in the experimental nuclear reaction database (EXFOR). Except the 118Sn(γ,n)117Sn, 150Nd(α,n)153Sm and 185Re(n,γ)186Re reactions, the two-component exciton model calculations of TALYS 1.6 code exhibit generally good agreement with the experimental measurements for all reactions used in this present study.
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Affiliation(s)
- B. Demir
- İstanbul University , Faculty of Science, Physics Department, 34134 İstanbul , Turkey
| | - A. Kaplan
- Süleyman Demirel University , Arts and Sciences Faculty, Physics Department, 32260 Isparta , Turkey
| | - V. Çapalı
- Süleyman Demirel University , Arts and Sciences Faculty, Physics Department, 32260 Isparta , Turkey
| | - İ. H. Sarpün
- Afyon Kocatepe University , Arts and Sciences Faculty, Physics Department, 03200 Afyonkarahisar , Turkey
| | - A. Aydın
- Kırıkkale University , Arts and Sciences Faculty, Physics Department, 71450 Kırıkkale , Turkey
| | - E. Tel
- Osmaniye Korkut Ata University , Arts and Sciences Faculty, Physics Department, 80000 Osmaniye , Turkey
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Demir B, Kaplan A, Çapalı V, Özdoğan H, Sarpün İH, Aydın A, Tel E. Neutron Production Cross-Section and Geant4 Calculations of the Structural Fusion Material 59Co for (α,xn) and (γ,xn) Reactions. J Fusion Energ 2015. [DOI: 10.1007/s10894-015-9860-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Abstract
Recently, many formalizations have been developed to explain some reaction mechanisms such as neutron or proton induced reactions. In this study, (d, n) reaction mechanism was investigated developing the cross-section systematic formula. The (d, n) cross sections at 8.6 MeV deuteron energy have been calculated using these formula for some target nuclei (A = 10∼123). The cross sections calculated are important for the development of fusion reactor technology. Obtained calculation results from the formula have been also compared and discussed with results calculated by the codes ALICE/ASH (equilibrium and pre-equilibrium theories) and TENDL-2012 (Talys-based), and with results of available experimental values. It is shown, that the suggested empirical equation at the 8.6 MeV deuteron energy works very well for a quick estimation of (d, n) nuclear cross sections.
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Affiliation(s)
- M. Yiğit
- Department of Physics , Aksaray University, 68100 Aksaray , Turkey
| | - E. Tel
- Department of Physics , Osmaniye Korkut Ata, University, 80000 Osmaniye , Turkey
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Yiğit M, Tel E. Nuclear model calculation for production of 18F, 22Na, 44,46Sc, 54Mn, 64Cu, 68Ga, 76Br and 90Y radionuclides used in medical applications. ANN NUCL ENERGY 2014. [DOI: 10.1016/j.anucene.2014.01.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kaplan A, Çapalı V, Özdoğan H, Aydın A, Tel E, Sarpün İH. (3He,xn) Reaction Cross-Section Calculations for the Structural Fusion Material 181Ta in the Energy Range of 14–75 MeV. J Fusion Energ 2014. [DOI: 10.1007/s10894-014-9705-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
Abstract
The nuclear reactions of the deuteron particles with light nuclei have been extensively investigated in the history of nuclear physics. In this work, the cross-sections of deuteron reactions 6Li(d,n)7Be, 6Li(d,t)5Li, 7Li(d,2n)7Be, 7Li(d,p)8Li, 7Li(d,t)6Li, 9Be(d,p)10Be, 9Be(d,t)8Be, 19F(d,n)20Ne and 19F(d,p)20F were studied for the investigation of structural fusion materials. Excitation functions of these reactions were determined by using ALICE-ASH code considering equilibrium (EQ) and pre-equilibrium (PEQ) effects. The calculated cross-sections, experimental results and TENDL-2011 library data are presented in graphical form.
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Affiliation(s)
- M. Yiğit
- Faculty of Arts and Science , Department of Physics, Aksaray University, 68100 , Aksaray-Turkey
| | - E. Tel
- Faculty of Arts and Science , Department of Physics, Osmaniye Korkut Ata University, 80000 , Osmaniye-Turkey
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Abstract
Abstract
Copper and cobalt radioisotopes have been used for both diagnostic and therapeutic purposes in the field of nuclear medicine. There is considerable interest in 60
,61,64,67Cu and 55,57Co radioisotopes for some applications like PET, SPECT imaging and targeted radiotherapy of tumors. In present study, the production of 60,61,64,67Cu and 55,57Co via 64Zn(p,α)61Cu, 67Zn(p,α)64Cu, 70Zn(p,α)67Cu, 58Ni(p,α)55Co, 60Ni(p,α)57Co, 64Zn(p,nα)6°Cu and 68Zn(p,nα)64Cu reactions have been investigated in the range of 5–40 MeV proton incident energy. The new version of the code ALICE-2011 is used to determine the excitation functions of these nuclear reactions. The calculated excitation functions were compared with experimental results and semi-empirical cross section values of a previously developed model.
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Affiliation(s)
- S. Akca
- Cukurova University, Faculty of Arts and Science, Department of Physics, Adana-TURKEY
| | - E. Tel
- Osmaniye Korkut Ata University, Faculty of Arts and Science, Department of Physics, Osmaniye-TURKEY
| | - A. Kara
- Osmaniye Korkut Ata University, Faculty of Arts and Science, Department of Physics, Osmaniye-TURKEY
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Ugur FA, Turhan S, Gören E, Gezer F, Yegingil Z, Sahan H, Sahan M, Tel E, Karahan G. A survey of distribution of terrestrial radionuclides in surface soil samples in and around the Osmaniyeprovince, Turkey. Radiat Prot Dosimetry 2013; 154:483-489. [PMID: 23045718 DOI: 10.1093/rpd/ncs259] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The purpose of this survey was to determine the distribution of terrestrial radionuclides ((238)U, (232)Th and (40)K) in surface soil samples collected from different locations in and around Osmaniye and assess the radiological implications of outdoor external exposure. The activity concentrations of (238)U, (232)Th and (40)K in soil samples ranged from 2.6 to 38.1 Bq kg(-1) with a mean of 10.4±0.7 Bq kg(-1), 3.7-40.5 Bq kg(-1) with a mean of 12.2±0.7 Bq kg(-1) and 30.0-639.7 Bq kg(-1) with a mean of 243.4±12.8 Bq kg(-1), respectively. The concentrations of these radionuclides, presented in this article, were compared with those obtained from similar studies related to Turkey reported in the literature as well as earth's crust average values. The results of the activity concentrations were used to assess the external absorbed gamma dose rate (GDR) in outdoor air and the annual effective dose (AED). The outdoor absorbed GDRs fluctuate from 5.2 to 53.6 nGy h(-1) with a mean of 22.4±9.5. The corresponding mean AED is found to be 0.03 mSv.
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Affiliation(s)
- F A Ugur
- Department of Physics, Faculty of Science and Letters, Korkut Ata University, 80010 Osmaniye, Turkey
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Abstract
Abstract
In this study, production routes of medical 110,111In radionuclides produced by 110Cd(p, n)110In, 111Cd(p, 2n)110In, 112Cd(p, 3n)110In, 107Ag(α, n)110In, 109Ag(α, 3n)110In, 111Cd(p, n)111In, 112Cd(p, 2n)111In, 113Cd(p, 3n)111In, 114Cd(p, 4n)111In, 109Ag(α, 2n)111In, 107Ag(α, γ)111In and 113In(n, 3n)111In reactions have been investigated up to 70 MeV incident particle energy. In these calculations, the pre-equilibrium and equilibrium effects have been investigated. The pre-equilibrium calculations involve the geometry dependent hybrid model and the cascade exciton model. The full exciton model has also been used to investigate the pre-equilibrium direct effects. Equilibrium effects are calculated according to the Weisskopf–Ewing model. The calculated results are compared with the experimental data taken from the literature.
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Affiliation(s)
- H. Büyükuslu
- Süleyman Demirel University, Faculty of Arts and Sciences, Physics, Department, 32260 Isparta, Turkey
| | - A. Kaplan
- Süleyman Demirel University, Faculty of Arts and Sciences, Physics, Department, 32260 Isparta, Turkey
| | - G. Yıldırım
- Abant I˙zzet Baysal University, Faculty of Arts and Sciences, Physics Department, 14280 Bolu, Turkey
| | - A. Aydin
- Kirikkale University, Faculty of Arts and Sciences, Physics Department, 71450 Kirikkale, Turkey
| | - E. Tel
- Gazi University, Faculty of Arts and Sciences, Physics Department, 06500 Ankara, Turkey
| | - M. H. Bölükdemir
- Gazi University, Faculty of Arts and Sciences, Physics Department, 06500 Ankara, Turkey
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Aydin EG, Tel E, Kaplan A, Aydin A. New calculations of excitation functions of some positron emitting and single photon emitting radioisotopes. KERNTECHNIK 2013. [DOI: 10.3139/124.100563] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this study, new calculations of the excitation functions of 56Fe(p,2n)55Co,58Fe(p,2n)57Co,60Ni(p,n)60Cu,62Ni(p,2n)61Cu, 68Zn(p,2n)67Ga, 72Ge(p,n)72As,82Kr(p,2n)81Rb, 124Xe(p,2n)123Cs, 112Cd(p,2n)111In and 203Tl(p,3n)201Pb reactions have been carried for incident proton energies up to 50 MeV. In these calculations, the pre-equilibrium and equilibrium effects have been investigated. The pre-equilibrium calculations involve the newly evaluated geometry-dependent hybrid model, hybrid model and the cascade exciton model. Equilibrium effects are calculated according to the Weisskopf–Ewing model. The calculated results are compared with the experimental data taken from the literature.
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Affiliation(s)
- E. G. Aydin
- Faculty of Arts and Science, Gazi University, 06500 Ankara, Turkey
| | - E. Tel
- Faculty of Arts and Science, Gazi University, 06500 Ankara, Turkey
| | - A. Kaplan
- Faculty of Arts and Science, Suleyman Demirel University, 32260 Isparta, Turkey
| | - A. Aydin
- Faculty of Arts and Science, Kirikkale University, 71450 Kirikkale, Turkey
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Abstract
Abstract
In this study, neutron incident reaction cross sections for some target nuclei such as 24Mg, 27Al, 28Si, 56Fe, and 63Cu used in neutron activation analysis have been investigated. The new calculations on the excitation functions of 24Mg(n, p)24Na, 27Al(n, p)27Mg, 27Al(n, α)24Na, 28Si(n, p)28Al, 56Fe(n, p)56Mn, and 63Cu(n, 2n)62Cu reactions have been carried out for incident neutron energies up to 20 MeV. In these calculations, the pre-equilibrium and equilibrium effects have been investigated. The pre-equilibrium calculations involve the new geometry dependent hybrid model and the full exciton model. Equilibrium effects are calculated according to the Weisskopf–Ewing model. In the present work, reaction cross-sections have been calculated by using empirical formulas developed for energies of 14–15 MeV. The calculated results are discussed and compared with the experimental data taken from the EXFOR database.
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Affiliation(s)
- E. Tel
- Department of Physics, Faculty of Sciences and Letters, University of Osmaniye Korkut Ata, Osmaniye, Turkey
| | - M. Şahan
- Department of Physics, Faculty of Sciences and Letters, University of Osmaniye Korkut Ata, Osmaniye, Turkey
| | - F. A. Uğur
- Department of Physics, Faculty of Sciences and Letters, University of Osmaniye Korkut Ata, Osmaniye, Turkey
| | - H. Şahan
- Department of Physics, Faculty of Sciences and Letters, University of Osmaniye Korkut Ata, Osmaniye, Turkey
| | - A. Aydin
- Faculty of Arts and Science, Kirikkale University, 71450 Kirikkale, Turkey
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Kaplan A, Özdoğan H, Aydın A, Tel E. (γ,2n) Reaction Cross Section Calculations on Several Structural Fusion Materials. J Fusion Energ 2012. [DOI: 10.1007/s10894-012-9590-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tel E, Gokce AA, Ugur FA, Kara A. Alpha Emission Spectra of 27Al, 50,52Cr, 55Mn, 54,56Fe, 58,60Ni Nucleus for Neutron Induced Reaction. J Fusion Energ 2012. [DOI: 10.1007/s10894-012-9582-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yiğit M, Tel E, Tanır G. Calculations of (n,α) Cross Sections on Some Structural Fusion Materials for Fusion Reactor Technology. J Fusion Energ 2012. [DOI: 10.1007/s10894-012-9574-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kaplan A, Özdoğan H, Aydın A, Tel E. Deuteron-Induced Cross Section Calculations of Some Structural Fusion Materials. J Fusion Energ 2012. [DOI: 10.1007/s10894-012-9532-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sahan M, Tel E, Aydin A, Yegingil I. Investigation of Some Stellar Iron Group Fusion Materials for (n, p) Reactions. J Fusion Energ 2011. [DOI: 10.1007/s10894-011-9430-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tel E, Şahan M, Aydın A, Bölükdemir M, Şahan H, Uğur FA. Investigation of Some Structural Fusion Materials for (n, α) Reactions at the 14–15 MeV Energy Region. J Fusion Energ 2010. [DOI: 10.1007/s10894-010-9337-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aydin A, Tel E, Şahan M. Calculation of Equilibrium and Pre-equilibrium 4He-Emission Spectra at 62 MeV Proton Incident Energy. J Fusion Energ 2010. [DOI: 10.1007/s10894-010-9339-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tel E, Kaplan A, Aydın A, Büyükuslu H, Demirkol İ, Arasoğlu A. Triton Emission Spectra in Some Target Nuclei Irradiated by Ultra-Fast Neutrons. J Fusion Energ 2010. [DOI: 10.1007/s10894-010-9281-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kaplan A, Büyükuslu H, Aydin A, Tel E, Yıldırım G, Bölükdemir MH. Excitation Functions of Some Neutron Production Targets on (d,2n) Reactions. J Fusion Energ 2009. [DOI: 10.1007/s10894-009-9255-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Aydin A, Yalim H, Tel E, Şarer B, Ünal R, Sarpün İ, Kaplan A, Dağ M. Level density parameter dependence of the fission cross sections of some subactinide nuclei induced by protons with the incident energy up to 250MeV. ANN NUCL ENERGY 2009. [DOI: 10.1016/j.anucene.2009.07.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bölükdemir MH, Tel E, Aktı NN, Aydın A, Okuducu Ş. Improved Formula for (n,3He) Fusion Reactions Cross Sections Using Optical Model. J Fusion Energ 2009. [DOI: 10.1007/s10894-009-9220-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Aydin A, Tel E, Kaplan A. Calculation of 14–15 MeV (n, d) Reaction Cross Sections Using Newly Evaluated Empirical and Semi-empirical Systematics. J Fusion Energ 2008. [DOI: 10.1007/s10894-008-9140-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aydin A, Şarer B, Tel E. New calculation of excitation functions of proton-induced reactions in some medical isotopes of Cu, Zn and Ga. Appl Radiat Isot 2007; 65:365-70. [DOI: 10.1016/j.apradiso.2006.10.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2006] [Accepted: 10/01/2006] [Indexed: 10/23/2022]
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Arslantas A, Gucuyener D, Uzuner N, Cosan E, Durmaz R R, Atasoy MA, Ozdemir G, Tel E. Assessment of cerebral blood flow velocities in pre and post angiographic states with transcranial doppler. Neurol India 2002; 50:459-61. [PMID: 12577095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
The frequency of complications resulting from angiograms reported in the literature vary between 0.2-5 percent. This study was planned to determine the changes in cerebral blood flow velocity before and after angiography, using transcranial doppler in patients of subarachnoid hemorrhage (SAH) undergoing angiographies. Thirty patients with subarachnoid hemorrhage underwent transcranial doppler ultrasonography immediately before and after angiography. Nonionic water-soluble agents were used during the angiograms. The mean flow velocity (MFV) and pulsatility index (PI) at the M1 segment of both middle cerebral arteries was simultaneously measured. When the patients (11 male, 19 female, mean age+SD; 52.45+12.06) were compared according to changes in MFV and PI, pre and post-angiography, there was no statistical difference in MFV (p=0.51 and p=0.99, left and right side respectively), and in PI (p=0.48 and p=0.66) pre and post angiography. Although angiogram can be used to detect vasospasm in SAH, it can also be cause of vasospasm, partially due to the effect of the contrast agent on the cerebral arteries. This study proposes that the angiographic method is still safe and TCD can be used to follow up any possible changes in diameter of cerebral arteries before and after angiography.
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Affiliation(s)
- A Arslantas
- Department of Neurosurgery, Osmangazi University, Faculty of Medicine, Eskisehir, Turkey
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Arslantaş A, Atasoy M, Güner A, Coşan E, Durmaz R, Adapinar B, Tel E. Three-dimensional computed tomography in spinal pathologies. Radiography (Lond) 2002. [DOI: 10.1053/radi.2002.0380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dundar E, Arslantas A, Acikalin MF, Tel E. Cerebellar metastasis from clear cell sarcoma of the kidney. A case report with immunohistochemistry. J Neurosurg Sci 2001; 45:228-31; discussion 231. [PMID: 11912476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The aim of this study was to describe a child with a right cerebellar hemisphere metastasis from primary clear cell sarcoma of the kidney without evidence of bone metastases, and to investigate the immunohistochemical features of primary and metastatic tumors. A 12-month old boy was admitted our hospital due to an abdominal mass. Abdominal computed tomography revealed a large right renal tumor. Tumor was removed with nephrectomy. Histopathologic examination of tumor revealed clear cell sarcoma of the kidney. The patient received radiotherapy and chemotherapy in postoperative period. He suffered from gait disturbance and confusion 8 months later. A computed tomography scan revealed a tumor that was enhanced with contrast medium at right cerebellar hemisphere concomitant with ventricular enlargement. After ventriculo-peritoneal shunting procedure, tumor was excised totally and histopathologic diagnosis showed metastasis of clear cell sarcoma of the kidney. Immunohistochemically vimentin, actin, desmin, neuron specific enolase, cytokeratin, P 53, Ki-67 and P-170 were performed using formalin fixed, paraffin embedded sections. Both of the tumors were positive for vimentin and negative for desmin, actin, neuron specific enolase, cytokeratin and P 53. Scattered nuclei were stained by Ki-67 in primary and metastatic cerebellar tumor. Both primary and metastatic tumors were negative for p53 and P-170. The treatment consisted of surgery, radiotherapy and chemotherapy. The patient is alive and well without evidence of recurrence 16 months after second surgery. Clear cell sarcoma of the kidney is most commonly associated with bone metastasis. Cerebellar metastasis of clear cell sarcoma of the kidney is very unusual. To the best of our knowledge, this patient is second case in the English literature. With review of the literature, our immunohistochemical findings support the theory that relapse and metastasis of primary clear cell sarcoma of the kidney are not related with increase of aggressiveness.
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Affiliation(s)
- E Dundar
- Department of Pathology, Osmangazi University Medical Faculty, Eskis ehir, Turkey
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Arslantas A, Cosan E, Durmaz R, Ert Lav K, Atasoy M, Tel E. Instrumentation for posterior stabilisation of cervical traumatic and degenerative disorders: bullet-shaped implant and titanium cable. J Neurosurg Sci 2001; 45:202-4; discussion 204-5. [PMID: 11912470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
BACKGROUND Numerous implants for posterior stabilisation of cervical spine have been described so far. The aims of all these implants and techniques are rigid spinal stabilisation without neurologic damage, restoration of neuroanatomy and excellent radiological studies in postoperative period. The objective of this study was to determine the effectively and clinical safety of this system. METHODS We conducted a retrospective analysis of patients treated with posterior stabilisation system for the stabilisation of traumatic and osteodegerative disorders of lower cervical spine in our department. This posterior cervical stabilisation system consist of titanium bullet-shaped implant (Ti-Frame) and titanium cables (sof' wire). RESULTS All patients underwent only posterior fixation except 2 (anterior decompression and posterior stabilisation in 2 stages) and postoperative early immobilisation was allowed with Philadelphia collar in all patients. At the follow-up period 15.2 months (9-25 months), none of the patients had superficial or deep infection, implant resection or failure. CONCLUSIONS In conclusion, this system (Ti-frame and titanium cables) is a simple, safe and effective system for posterior cervical stabilisation in patients with traumatic and osteodegenerative disorders due to provide rigid fixation and allow CT and MR imaging without the significant artifact.
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Affiliation(s)
- A Arslantas
- Department of Neurosurgery, University of Osmangazi, Eskisehir, Turkey.
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Cosan TE, Kabukcuoğlu S, Arslantas A, Atasoy MA, Dogan N, Ozgunes I, Kebabci M, Tel E. Spinal toxoplasmic arachnoiditis associated with osteoid formation: a rare presentation of toxoplasmosis. Spine (Phila Pa 1976) 2001; 26:1726-8. [PMID: 11474362 DOI: 10.1097/00007632-200108010-00019] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN An extremely rare presentation of an isolated spinal toxoplasmic arachnoiditis is described. OBJECTIVE To draw attention to the fact that spinal arachnoid membranes may be a potential reservoir for Toxoplasma gondii. SUMMARY OF BACKGROUND DATA Central nervous system toxoplasmosis is a common manifestation in patients who are immunodeficient. Reports on the spinal toxoplasmosis are rare and focused on spinal cord involvement. METHODS An adult patient presented with symptoms of spastic paraparesis that had begun 13 years before admission. Thoracic spinal magnetic resonance imaging showed small lesions in posterior subarachnoid space at Th7-Th8. A Th7-Th8 laminectomy was performed. Intradural-extramedullary lesions were excised. RESULTS Clinical, immunologic, and pathologic examinations showed adhesive spinal arachnoiditis associated with osteoid formation caused by past toxoplasmic infection. There was no impairment of the immunologic defense system. CONCLUSION Where no causative factor is found in serious spinal adhesive arachnoiditis, the possibility of spinal toxoplasmosis should also be investigated.
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Affiliation(s)
- T E Cosan
- Department of Neurosurgery, Osmangazi University, Eskisehir, Turkey
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Durmaz R, Atasoy MA, Durmaz G, Adapinar B, Arslantaş A, Aydinli A, Tel E. Multiple nocardial abscesses of cerebrum, cerebellum and spinal cord, causing quadriplegia. Clin Neurol Neurosurg 2001; 103:59-62. [PMID: 11311481 DOI: 10.1016/s0303-8467(00)00123-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In this paper we present a case of a diabetic patient with nocardial abscesses of cerebrum, cerebellum and the spinal cord. The present case is the first case in the literature of solitary intramedullary abscess in cervical spinal cord, causing tetraplegia. Nocardia asteroides grew in a culture of the abscess pus. After either surgical excision or drainage of lesions, a triple combination regimen of chemotherapy (amikacin, ceftriaxone and trimethoprim-sulfamethoxazole) was given, but the patient was lost in the postoperative period. This case gives suggestive evidence of an association between cervical spinal cord involvement and poor prognosis in CNS nocardiosis.
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Affiliation(s)
- R Durmaz
- Department of Neurosurgery, Medical Faculty of Osmangazi University, 26480, Eskisehir, Turkey.
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Abstract
Knife-inflicted, deeply penetrating head and neck trauma is an uncommon life-threatening injury and a challenging problem. An examination of the neurovascular and systemic physical status is a first requirement and the decision as to which approach to adopt for the removal of the blade is of critical importance. Here we report a rare case of a pre-auricular stab wound with the knife blade deeply lodged in the extracranial infratemporal fossa. Radiological investigations showed that the knife blade had entered from the temporomandibular joint and become lodged through the anterior margin of foremen magnum below the petrosal bone. Minimal left vocal cord paresis, left palatal weakness and a slight deviation of the tongue towards the left side were observed. The other neurological and systemic physical evaluations were normal. Simple withdrawal of the blade in the operating room did not cause serious neurovascular injury. Here we discuss and compare the expanded exposure of anatomical structures for blade removal and simple withdrawal in similar injuries.
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Affiliation(s)
- T E Cosan
- Neurosurgery Department, Medical Faculty of Osmangazi University, Eskisehir, Turkey.
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Abstract
The principles of the management of upper cervical injuries remain controversial. The specific anatomical conditions render upper cervical injuries more problematic than lower cervical injuries. Here we present and discuss our experiences with upper cervical injury, comparing them with other treatment modalities. The 24 patients admitted to our department with upper cervical injury were treated surgically or conservatively according to their neurological and radiological status. Five patients were treated surgically due to neurological abnormality associated with compression to neural structures observed in computerized tomography/magnetic resonance imaging (CT/MRI). Patients with no neural compression were managed conservatively, with the Philadelphia collar. All patients showed stable fracture healing and experienced no additional clinical disability on follow-up after a minimum of 3 months, except one who died due to cardiac and respiratory failure. Regardless of the type of injury, indication for surgery in many cases of upper cervical injury is neurological abnormality associated with radiologically observed neural compression. It is our belief that, in the absence of both neurological abnormality and compression to neural structures observed in CT/MRI, treatment with the Philadelphia collar alone is safe, cost-effective and easily applicable for many cases of upper cervical injury.
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Affiliation(s)
- T E Cosan
- Neurosurgery Department, Osmangazi University, Eskisehir, Turkey.
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Cosan TE, Gucuyener D, Dundar E, Arslantas A, Vural M, Uzuner K, Tel E. Cerebral blood flow alterations in progressive communicating hydrocephalus: transcranial Doppler ultrasonography assessment in an experimental model. J Neurosurg 2001; 94:265-9. [PMID: 11213964 DOI: 10.3171/jns.2001.94.2.0265] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT In many cases communicating hydrocephalus is the result of impairments in cerebrospinal fluid absorption in the arachnoid villi at the cranial convexity. Reported methods of creating experimental hydrocephalus have not sought to produce an arachnoidal adhesion in the cranial convexity. In this study the authors investigate alterations in cerebral blood flow (CBF) in experimental communicating hydrocephalus induced by the injection of kaolin into the subarachnoid space at the convexity in neonatal rats. METHODS In neonatal rats, kaolin was injected into the subarachnoid space at the cranial convexity. Assessment of CBF alterations was performed using transcranial Doppler ultrasonography preinjection and at 10 days, 4 weeks, and 8 weeks postinjection. Light microscopy examination was also performed at 4 weeks and 8 weeks postinjection. Conspicuous lateral ventricle enlargements of different dimensions were observed in kaolin-injected rats at 4 to 8 weeks postinjection. The third and fourth ventricles were dilated to a lesser extent. Resistance to CBF and increased mean CBF velocity were apparent 8 weeks after kaolin injection. Further, destruction and even loss of ependymal layers were more prominent at the chronic stage. CONCLUSIONS The present model may be considered a progressive communicating hydrocephalus because of marked changes in blood flow dynamics and destruction of the ependymal layer at the chronic stage.
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Affiliation(s)
- T E Cosan
- Department of Neurosurgery, Osmangazi University, Eskisehir, Turkey.
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