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Isomeric yield ratios; pre-equilibrium effects; moment of inertia; stack foil activation; γ-spectroscopy

Isomeric yield ratios have been measured for⁹³Nb(α, 2n)^95m,gTc reaction in the energy range 25–60 MeV. The ratios were compared with theoretical values obtained by means of two models one based on compound nucleus mechanism only and the other including pre-equilibrium effects. The trend of experimental ratios is better reproduced by the latter model, although there remains some discrepancy as to the magnitude at higher energies.

R Upadhyay¹ Ch V Sastry¹ R K Jain¹ J Rama Rao¹

1. Department of Physics, Banaras Hindu University, Varanasi - 221 005, India

Published

February 1994

Manuscript received

27 October 1993