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arXiv 1606.02575nucl-thnucl-ex
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朗道核能级密度理论及其在描述离散和s波中子共振能区的核能级密度中的应用

Landau theory of nuclear level density and its application in description of nuclear level density in the region of discrete and s-wave neutron resonance energies

A. Elmas, H. Ahmadov, B. Gonul

摘要:

在这项工作中,朗道表达式的可靠性的核能级密度计算进行了测试,为第一次,描述一些轻,中等质量和重核的核能级密度在相应的激发离散和s波中子共振能量。本文用卡方最小化方法处理核数据表[1]和[2]中核能级密度参数化系统给出的两个建议的离散能区的实验数据。在离散能区与相关数据的比较表明,Landau表达式的结果优于后移费米气体模型和恒温近似的结果。这个结果也是有效的一些感兴趣的核时,s波中子共振能级密度包括检查理论处方的能量范围内从初始束缚态到未束缚态附近的中子结合能。

英文摘要:

In this work, the reliability of the Landau expression for the nuclear level density calculations is tested, for the first-time, to describe nuclear level densities of some light, intermediate mass and heavy nuclei at excitations corresponding to discrete and s-wave neutron resonance energies. The chi-2 minimizing method is used in treatment of the experimental data for the two suggested energy range of discrete energies given by Nuclear Data Sheet [1] and by the systematic for nuclear level density parametrization in [2]. Our comparison with the related data in the discrete energy range has shown that the results obtained by the Landau expression are better than those of back-shifted Fermi-gas model and constant temperature approximation. This result is also valid for some nuclei of interest when the s-wave neutron resonance level density is included to check theoretical prescriptions in the energy range from initial bound states to unbound states near the neutron binding energy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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