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.; Aydin, A.; Yilmaz, M.

doi:10.1016/j.apradiso.2008.12.014

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

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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)

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
Gazi University Affiliated: Yes

Abstract

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.