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

作者：Reyhancan Iskender Atilla^*

来源：Annals of Nuclear Energy, 2012, 47: 81-84.

DOI：10.1016/j.anucene.2012.04.009

• Neutron cross section
• Activation technique
• Gamma-ray spectrometer
• Statistical model calculation
• Cerium

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.

• 出版日期2012-9