Role of pre-equilibrium effect in (n, α) reactions for fusion materials
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Date
2022-08
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G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145
Abstract
The neutron interaction cross-section in the energy range below 20 MeV is very important for the reactors i.e. fusion and fission. Recently, the theoretical understanding of nuclear reactions has acqiured a considerable degree of reliability. Hence it can be used for interpolation and extrapolation, consistency checks for experimenatal data and reasonably accurate prediction of unmeasureable data. The present thesis work consists of opting optical model potential, preequilibrium model and in carrying out hauser-Feshbach statistical model based calculations of cross-section for (n, α) rections on isotopes of Mo, Zr and W. The preequilibrium effect plays very prominent role in cross-section. Therefore, we have studied the cross-section with equilibrium effect and without the pre-equilibrium effect in (n, α) by using the TALYS 1.9. Then, this is compared with the experimental data and evaluated data from ENDF/B-VII.0, JEFF-3.3, JENDL-5. It can be conlcluded that (n, α) reactions proceeds through compound reaction mechanism at low energy. The consistency of calculated data from the TALYS 1.9 is checked by experimental crosssection data around 14 MeV of neutron.