BARC/PUB/2011/0259

 
 

Measurement of the neutron capture cross-section of 232Th using the neutron activation technique

 
     
 
Author(s)

Naik, H.; Prajapati, P. M.; Surayanarayana, S. V.; Jagadeesan, K. C.; Thakare, S. V.; Raj, D.; Mulik, V. K.; Sivashankar, B. S.; Nayak, B. K.; Sharma, S. C.; Mukherjee, S.; Singh, S.; Goswami, A.; Ganesan, S.; Manchanda, V. K.

Source

European Physical Journal-A, 2011. Vol. 47 (4): pp. 1-9

ABSTRACT

The 232Th(n, γ) reaction cross-section at average neutron energies of 3.7 ± 0.3MeV and 9.85 ± 0.38MeV from the 7Li(p, n) reaction has been determined for the first time using activation and offline γ-ray spectrometric technique. The 232Th(n, 2n) reaction cross-section at the average neutron energy of 9.85 ± 0.38MeV has been also determined using the same technique. The experimentally determined 232Th(n, γ) and 232Th(n, 2n) reaction cross-sections were compared with the evaluated data of ENDF/BVII, JENDL-4.0 and JEFF-3.1 and were found to be in good agreement. The present data along with literature data in a wide range of neutron energies were interpreted in terms of competition between different reaction channels including fission. The 232Th(n, γ) and 232Th(n, 2n) reaction cross-sections were also calculated theoretically using the TALYS 1.2 computer code and were found to be slightly higher than the experimental data.

 
 
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