Effect of Exciton Number on One – Component and Two – Component Partial Level Density Formulae
DOI:
https://doi.org/10.21123/bsj.2024.9267Keywords:
Level Density, Nuclear Level Density, Nuclear Reaction, Pre-Compound Nucleus, Pre-EquilibriumAbstract
In this paper we made a comparison between the theoretical results of one and two components of partial level density Ericson's formulae with the experimental results. In the frame work of equidistant spacing model. It is noticed that the values of one - component partial level density formula increases with increasing the exciton number. the excitons numbers is taken 3, 5, 7 and 9. The same excitons number is substituted in two-component partial level density formula, but the increase in partial level density values in case of two components with the excitons numbers is slight and this change is so small that it cannot be seen. Therefore one can say that the increase in exciton number effects on the one-component partial level density value and lead to an increase them. But in the case of two-components the partial level density value doesn't affect by the change in exciton number values because the energy distributed on particles more than in case of one- component and this makes partial level density less than in case of one-component and the effect of change in exciton number doesn't appear. In case of one-component when the exciton numbers is n=3 the theoretical partial level density curve lies below the experimental curve and when n=5 the theoretical curve become more close to the experimental curve. And at n = 7 the theoretical curve intersect with the experimental curve at E = 5 MeV, So when n=9 the theoretical curve intersect with the experimental curve at 4 MeV.
Received 15/06/2023
Revised 04/12/2023
Accepted 06/12/2023
Published Online First 20/07/2024
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Copyright (c) 2024 Suha Ali Najm , Ali Dawoud Salloum
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