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arXiv 0901.1087nucl-th
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组合核能级-密度模型

Combinatorial nuclear level-density model

H. Uhrenholt, S. Åberg, P. Möller, T. Ichikawa

摘要:

本文提出了一个微观核能级-密度模型。该模型是一个完全组合(微正则)模型的基础上折叠汤川单粒子的潜力,包括明确的治疗配对,旋转和振动状态。所有状态的微观特征使得能够提取相对于配对间隙、宇称和角动量的能级分布函数。该模型的结果进行了比较,可用的实验数据:中子分离能级间距,总水平密度函数的奥斯陆方法,从低洼的离散状态的累积水平密度的数据,和宇称比。

英文摘要:

A microscopic nuclear level-density model is presented. The model is a completely combinatorial (micro-canonical) model based on the folded-Yukawa single-particle potential and includes explicit treatment of pairing, rotational and vibrational states. The microscopic character of all states enables extraction of level distribution functions with respect to pairing gaps, parity and angular momentum. The results of the model are compared to available experimental data: neutron separation energy level spacings, data on total level-density functions from the Oslo method, cumulative level densities from low-lying discrete states, and data on parity ratios.

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