Abstract
With a view to study the pre-equilibrium effects in neutron-induced reactions, the activation cross-sections for (n, 2n) reactions at 14.2±0.2 MeV in the heavy mass region have been measured using the versatile mixed powder technique and high resolution Ge(Li) detection. The experimental cross-sections are found to be consistently smaller than the predictions based on the statistical theory and this is attributed to the effect of pre-equilibrium decay in these reactions. The cross-sections due to pre-equilibrium decay were estimated using exciton, hybrid and unified models. When this cross-section was included in comparing the experimental cross-sections with theory, we obtained better agreement, within the limitations of the present-day preequilibrium theories.
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Preliminary results of this work were reported at the Nuclear Physics and Solid State Physics Symposium, Pune (1978).
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Das, N.L., Srinivasa Rao, C.V., Thirumala Rao, B.V. et al. Pre-equilibrium effects in (n, 2n) reactions at 14.2 MeV+ . Pramana - J. Phys. 17, 99–104 (1981). https://doi.org/10.1007/BF02872041
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DOI: https://doi.org/10.1007/BF02872041