Measurements and model calculations of isomeric cross section for (n,alpha) reaction on Ce-140 isotope around 14 MeV neutrons

Reyhancan I. A.

ANNALS OF NUCLEAR ENERGY, vol.47, pp.81-84, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47
  • Publication Date: 2012
  • Doi Number: 10.1016/j.anucene.2012.04.009
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.81-84
  • Istanbul Technical University Affiliated: Yes


In this work, cross sections were measured for the Ce-140(n,alpha)Ba-137 (T-1/2 = 2.552 min) reaction at neutron energies from 13.57 to 14.83 MeV. The neutrons were produced via the H-3(H-2,n)He-4 reaction on a neutron generator using a solid Ti-T target. The activation technique was used, and induced gamma activities were measured by a high resolution gamma-ray spectrometer. Corrections were made for the effects of gamma-ray attenuation, random coincidence (pulse pileup), coincidence summing, dead time, neutron flux fluctuations, and low-energy neutrons. The measured cross sections were compared with statistical model (TALYS code) calculation results and the experimental data in the available literature. (C) 2012 Elsevier Ltd. All rights reserved.