INDC(IND)-35G - IAEA Nuclear Data Services
INDC(IND)-35G - IAEA Nuclear Data Services
INDC(IND)-35G - IAEA Nuclear Data Services
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HEUTRON CAPTURE CROSS -SECTION OF 232 Th<br />
H.psAnand,H.M. .T;.' J n, S. Kailas<br />
S.K.CJupta,V.S, Rsraamurthy and<br />
S.S.Kapoor<br />
Bhabha Atomic Research. Centre,<br />
Bombay-400085, India.<br />
232<br />
The neutron capture cross-sections of Th have<br />
been measured relative to gold in the neutron energy<br />
range of 450 -1100 KeV. Monoenergetic neutrons were<br />
produced fron the Li(p,n) reaction using the monoenergetic<br />
protons from the Trombay Van de Qraaff Accelerator<br />
and a liquid nitrogen cooled Li - metal tprg«t.<br />
A high resolution Ge(li) detector w?s employed for<br />
measuring the gamma activity of the product nucleus<br />
These measurements were also carried out at thermal<br />
neutron energy for the overall normalization. Small<br />
variations in the neutron flux with time were taken into<br />
account while calculating the cross-sections. The effect<br />
of self absorption and multiple scattering of neutrons<br />
In the Thorium oample were also considered. The measured<br />
cross section values are compared with the other recent<br />
measurements and evaluations.<br />
• Experimental Renctor Physics Section, Bhebha Atomic<br />
Research Centre, Bombay 400085, India.