Cascade-exciton model analysis of level density parameter dependence in proton induced fission cross sections of some sub-actinide nuclei

Zafar Yasin; Warda Iram; Muhammad Asghar; Ikram Shahzad

doi:10.1088/1674-1137/35/11/006

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2024年10月30日

Chinese Physics C> 2011, Vol. 35> Issue(11) : 1013-1016 DOI: 10.1088/1674-1137/35/11/006

Cascade-exciton model analysis of level density parameter dependence in proton induced fission cross sections of some sub-actinide nuclei

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Abstract：
Fission cross sections strongly depend on the ratio of the level density parameter in fission to neutron emission, a_f/a_n. In this work, a cascade-exciton model implemented in the code CEM95 has been used to observe this effect for proton induced fission cross sections of tungsten, lead and bismuth. The method was employed using different level density parameter ratios for each fission cross section calculation. The calculated fission cross sections are compared with the available experimental data in the literature. It has been observed that a change of the ratio of the level density parameter, a_f/a_n, is necessary with the incident energy of the proton, to best estimate the fission cross sections in CEM95.

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Zafar Yasin, Warda Iram, Muhammad Asghar and Ikram Shahzad. Cascade-exciton model analysis of level density parameter dependence in proton induced fission cross sections of some sub-actinide nuclei[J]. Chinese Physics C, 2011, 35(11): 1013-1016. doi: 10.1088/1674-1137/35/11/006

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Received: 2011-01-14
Revised: 2011-06-13

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沈阳化工大学材料科学与工程学院沈阳 110142

Cascade-exciton model analysis of level density parameter dependence in proton induced fission cross sections of some sub-actinide nuclei

Received Date: 2011-01-14
Accepted Date: 2011-06-13
Available Online: 2011-11-05

Abstract: Fission cross sections strongly depend on the ratio of the level density parameter in fission to neutron emission, a_f/a_n. In this work, a cascade-exciton model implemented in the code CEM95 has been used to observe this effect for proton induced fission cross sections of tungsten, lead and bismuth. The method was employed using different level density parameter ratios for each fission cross section calculation. The calculated fission cross sections are compared with the available experimental data in the literature. It has been observed that a change of the ratio of the level density parameter, a_f/a_n, is necessary with the incident energy of the proton, to best estimate the fission cross sections in CEM95.