US EPA

5020229 

Journal Article 

Measurement of 232Th and 238U neutron capture cross-sections in the energy range 5-17 MeV 

Mukherjee, S; Vansola, V; Parashari, S; Makwana, R; Singh, NL; Suryanarayana, SV; Sharma, SC; Nayak, BK; Naik, H 

2019 

143 

72-78 

English 

30390503 

10.1016/j.apradiso.2018.10.013 

WOS:000453338900012 

The neutron capture cross sections of 232Th and 238U at the average neutron energies of 5.08 ± 0.17, 8.96 ± 0.77, 12.47 ± 0.83, and 16.63 ± 0.95 MeV have been measured by using the activation technique and off-line γ-ray spectroscopy. The 232Th and 238U were irradiated with neutrons produced from the 7Li(p, n) reaction using the proton energies of 7, 11, 15 and 18.8 MeV from the 14UD BARC-TIFR Pelletron facility in Mumbai, India. Detailed covariance analysis was also performed to evaluate the uncertainties in the measured cross-sections. The excitation function of the 232Th(n, γ) and 238U(n, γ) reactions were calculated using the theoretical model code TALYS-1.9. The experimental and theoretical results from the present work were compared with the ENDF/B-VII-1 and JENDL-4.0 nuclear data libraries and were found to be in good agreement.