A Study of Excitation Functions in the Interaction of 4He + 59Co System at 4-9MeV/Nucleon

Abraham Barena Bekele


The excitation functions for six reactions produced in the interactions of 4He +59Co have been measured in the energy range up to 41MeV using the activation technique. The measured excitation functions are compared with theoretical calculations done using the computer program COMPLET.  The effect of the variation of various program parameters on calculated excitation functions have been studied. The study signified that an admixture of equilibrium and pre-equilibrium emissions is required to reproduce the presently calculated excitation functions.An attempt was made to deduce the contribution coming from pre-equilibrium emission. It was found that the pre-equilibrium contribution increases with projectile energy. Further, the threshold of pre-equilibrium emission for different reaction channels is found to be different, depending on the associated Q-value. Furthermore, the present result revealed a strong correlation between pre-equilibrium contribution and particle multiplicity.

DOI: 10.7176/APTA/86-01

Publication date:October 31st 2022

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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