| Abstrakt: |
Nuclear level density parameter is one of the fundamental quantities required for finding the nuclear level density. The most essential ingredient for the theoretical analysis of nuclear reactions is nuclear level density. This work is a theoretical study on the variation of collective nuclear level density parameter of certain even-even actinides. This calculations were performed by using phenomenological models of level density. The computational code TALYS 1.9 has been made use of for this purpose. Here, we calculated the collective nuclear level density parameter of 268 - 278 Th, 270 - 280 U, 272 - 282 Pu, 274 - 284 Cm, 278 - 288 Cf, 278 - 288 Fm and 280 - 290 No, at neutron separation energy. Variation of collective level density parameter with different mass number is estimated for these selected nuclei. These studies show that nuclear level density parameter is minimum at neutron number N = 180 and 184 for these systems studied. Apart from that, the level density parameters decrease towards N = 184 . [ABSTRACT FROM AUTHOR] |
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