Pre-equilibrium effects in (n, 2n) reactions at 14.2 MeV

With a view to studying the pre-equilibrium effects in neutron-induced reactions, the activation cress-sections for (n, 2n) reactions at 14.2 plus/minus 0.2 MeV in the heavy mass region have been measured using the versatile mixed powder technique and high resolution Ge(Li) detection. The experiment...

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Bibliographic Details
Published in:Pramāṇa 1981-07, Vol.17 (1), p.99-104
Main Authors: Das, N Lakshmana, Srinivasa Rao, C V, Thirumala Rao, B V, Rama Rao, J
Format: Article
Language:English
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Summary:With a view to studying the pre-equilibrium effects in neutron-induced reactions, the activation cress-sections for (n, 2n) reactions at 14.2 plus/minus 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, better agreement was obtained, within the limitations of the present-day pre-equilibrium theories. 23 ref.--AA.
ISSN:0304-4289
0973-7111
DOI:10.1007/BF02872041