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Measurement of Gamma-ray Yield from Thick Carbon Target Irradiated by 5 and 9 MeV Deuterons

  • Araki, Shouhei (Department of Advanced Energy Engineering Science, Kyushu University) ;
  • Kondo, Kazuhiro (Department of Advanced Energy Engineering Science, Kyushu University) ;
  • Kin, Tadahiro (Department of Advanced Energy Engineering Science, Kyushu University) ;
  • Watanabe, Yukinobu (Department of Advanced Energy Engineering Science, Kyushu University) ;
  • Shigyo, Nobuhiro (Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University) ;
  • Sagara, Kenshi (Department of Physics, Kyushu University)
  • Received : 2015.07.17
  • Accepted : 2016.11.28
  • Published : 2017.03.31

Abstract

Background: The design of deuteron accelerator neutron source facilities requires reliable yield estimation of gamma-rays as well as neutrons from deuteron-induced reactions. We have so foar measured systematically double-differential thick target neutron yields (DDTTNYs) for carbon, aluminum, titanium, copper, niobium, and SUS304 targets. In the neutron data analysis, the events of gamma-rays taken simultaneously were treated as backgrounds. In the present work, we have re-analyzed the experimental data for a thick carbon target with particular attention to gamma-ray events. Materials and Methods: Double-differential thick target gamma-ray yields from carbon irradiated by 5 and 9 MeV deuterons were measured using an NE213 liquid organic scintillator at the Kyushu University Tandem accelerator Laboratory. The gamma-ray energy spectra were obtained by an unfolding method using FORIST code. The response functions of the NE213 detector were calculated by EGS5 incorporated in PHITS code. Results and Discussion: The measured gamma-ray spectra show some pronounced peaks corresponding to gamma-ray transitions between discrete levels in residual nuclei, and the measured angular distributions are almost isotropic for both the incident energies. Conclusion: PHITS calculations using INCL, GEM, and EBITEM models reproduce the spectral shapes and the angular distributions generally well, although they underestimate the absolute gamma-ray yields by about 20%.

Acknowledgement

Supported by : Japan Science Society

References

  1. Nagai Y, et al. Generation of radioisotopes with accelerator neutrons by deuterons. J. Phys. Soc. Japan. 2013;82:064201. https://doi.org/10.7566/JPSJ.82.064201
  2. Agosteoa S, Curzioc G, d'Erricoc F, Nath R, Tinti R. Characterization of an accelerator-based neutron source for BNCT versus beam energy. Nucl. Inst. Meth. A. 2002;476:106-112. https://doi.org/10.1016/S0168-9002(01)01402-4
  3. Moeslang A, Heinzel V, Matsui H, Sugimoto M. The IFMIF test facility design. Fusion, Eng, Des. 2006;81:863-871. https://doi.org/10.1016/j.fusengdes.2005.07.044
  4. Shigyo N, et al. Measurement of deuteron induced thick target neutron yields at 9 MeV. J. Korean. Phys. Soc. 2010;59:1725-1728.
  5. Tajiri Y, Watanabe Y, Shigyo N, Hirabayashi K, Nishizawa T, Sagara K. Measurement of double differential neutron yields from thick carbon target irradiated by 5-MeV and 9-MeV deuterons. Prog. Nucl. Sci. Tech. 2014;4: 582-586. https://doi.org/10.15669/pnst.4.582
  6. Hirabayashi K, et al. Measurement of neutron yields from thick Al and SUS304 Targets Bombarded by 5-MeV and 9-MeV deuterons. Prog. Nucl. Sci. Tech. 2012;1:60-64.
  7. Boudard A, Cugnon J, David JC, Leray S, Mancusi D. New potentialities of the Liege intranuclear cascade model for reactions induced by nucleons and light charged particles. Phys. Rev. C 2013;87:014606. https://doi.org/10.1103/PhysRevC.87.014606
  8. Sato T, et al. Particle and heavy ion transport code system PHITS, Version 2.52. J. Nucl. Sci. Technol. 2013;50(9):913-923. https://doi.org/10.1080/00223131.2013.814553
  9. Araki S, Watanabe Y, Kin T, Shigyo N, Sagara K. Measurement of double differential neutron yields from thick aluminum target irradiated by 9 MeV deuteron. Energy Procedia 2015;71:197-204. https://doi.org/10.1016/j.egypro.2014.11.870
  10. Ziegler JF, Biersack JP, and Littmark U. The stopping and range of Ions in solids. 2nd Ed. New York, NY. Pergamon Press. 2009; 95-128.
  11. Moszynski M, et al. Identification of different reaction channels of high energy neutrons in liquid scintillators by the pulse shape discrimination method. Nucl. Phys. A. 1994;343:563-572.
  12. Hirayama H, Namito Y, Bielajew AF, Wilderman SJ, Nelson WR. The EGS5 code system. KEK Report 2005-8. High Energy Accelerator Research Organization. 2005;8.
  13. Johnson RH, Ingersoll DT, Wehring BW, Dorning JJ. NE-213 neutron spectrometry system for measurement from 1.0 to 20 MeV. Nucl. Inst. Meth. 1977;145:337-346. https://doi.org/10.1016/0029-554X(77)90430-X
  14. Furihata S. Statistical analysis of light fragment production from medium energy proton-induced reactions. Nucl. Inst. and Meth. B. 2000;171:251-258. https://doi.org/10.1016/S0168-583X(00)00332-3
  15. Shen W, Wang B, Feng J, Zhan W, Zhu Y, Feng E. Total reaction cross section for heavy-ion collisions and its relation to the neutron excess degree of freedom. Nucl. Phys. A. 1989;491:135-146.
  16. Tripathi RK, Cucinotta FA, Wilson JW. Accurate universal parameterization of absorption cross sections III-light system. Nucl. Inst. Meth. B. 1999;155:349-356. https://doi.org/10.1016/S0168-583X(99)00479-6
  17. Ogawa T, Hashimoto S, Sato T, Niita K. Development of gamma de-excitation model for prediction of prompt gamma-rays and isomer production based on energy-dependent level structure treatment. Nucl. Phys. B. 2014;325:35-42.