Spallation neutron emission spectra in medium and heavy target nuclei by a proton beam up to 140 MeV energy

Kaplan A., Tel E., Aydin E. G., Aydin A., Yilmaz M.

APPLIED RADIATION AND ISOTOPES, cilt.67, sa.4, ss.570-576, 2009 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 67 Sayı: 4
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.apradiso.2008.12.014
  • Dergi Adı: APPLIED RADIATION AND ISOTOPES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.570-576
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, neutron-emission spectra produced by (pxn) reactions for some spallation neutron target nuclei such as Cu-65, Pb-204.206.207.208, Bi-209, Th-232 and U-238 have been calculated by a proton beam up to 140 MeV. Multiple pre-equilibrium mean free path constants from internal transition for Pb-204,Pb-208 (p, xn) neutron emission spectra have been investigated. In the calculations, pre-equilibrium effects were calculated by using new evaluated hybrid model and geometry dependent hybrid model, full exciton model and cascade exciton model. The reaction equilibrium component was calculated by Weisskopf-Evving model. The obtained results have been discussed and compared with the available experimental data and found agreement with each other. (C) 2009 Elsevier Ltd. All rights reserved.