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, vol.67, no.4, pp.570-576, 2009 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 67 Issue: 4
  • Publication Date: 2009
  • Doi Number: 10.1016/j.apradiso.2008.12.014
  • Journal Name: APPLIED RADIATION AND ISOTOPES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.570-576
  • Süleyman Demirel University Affiliated: Yes

Abstract

In this study, neutron-emission spectra produced by (pxn) reactions for some spallation neutron target nuclei such as (65)Cu, (204.206.207.208)Pb, (209)Bi, (232)Th and (238)U have been calculated by a proton beam up to 140 MeV. Multiple pre-equilibrium mean free path constants from internal transition for (204,208)Pb (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.