Systematics of nuclear level density parameters
Systematics of nuclear level density parameters
复制标题
核能级密度参数系统学
DOI：
10.1088/0954-3899/31/10/052
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Egidy
中科院分区：
文献类型：
--
作者：
D. Bucurescu;T. Egidy
通过对低激发能下的全能级方案和中子束缚能下的S波中子共振间距的拟合，确定了18F到251Cf范围内310个原子核的回移费米气体的能级密度参数和恒温模型。提出了描述这些模型的两个参数的简单公式，它们只涉及从质量表中获得的量。这些公式可能构成了一个可靠的工具，可以用来外推到远离稳定性的核，因为那里的核能级密度无法测量。
The level density parameters for the back-shifted Fermi gas (both without and with energy-dependent level density parameter) and the constant temperature models have been determined for 310 nuclei between 18F and 251Cf by fitting the complete level schemes at low excitation energies and the s-wave neutron resonance spacings at the neutron binding energies. Simple formulae are proposed for the description of the two parameters of each of these models, which involve only quantities available from the mass tables. These formulae may constitute a reliable tool for extrapolating to nuclei far from stability, where nuclear level densities cannot be measured.