Systematic investigation of precompound emission over compound evaporation in α+89y reaction

Abstract

The exciton model and the hybrid Monte-Carlo simulation method have been used to investigate the effect of pre-equilibrium emission over compound evaporation in the α+89Y reaction. The pre-equilibrium excitation functions of 92m,91m,90,89Nb, 89,88Zr and 88,87Y radionuclides populated via xn, pxn, and αxn channels, respectively, were evaluated over a wide energy range, starting from the threshold and up to 100 MeV. The results show that the inclusion of a precompound model is essential to reproduce the measured data. Our calculations are in a good agreement with the most of the experimental data reported earlier.