Fission modes of 256Fm and 258Fm in a microscopic approach
Fission modes of 256Fm and 258Fm in a microscopic approach
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微观方法中 256Fm 和 258Fm 的裂变模式
DOI：
10.1103/physrevc.74.014301
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发表时间：
2006
影响因子：
3.1
通讯作者：
L. Bonneau
中科院分区：
文献类型：
--
作者：
L. Bonneau
在Skyrme-Hartree-Fock-plus-BCS模型下，对256 Fm和258 Fm同位素的势能面进行了静态微观研究，目的是推导自发裂变的一些性质.计算的裂变模式被发现是一致的实验观察到的不对称到对称的过渡的碎片质量分布和高和低的总动能模式实验观察到的258 Fm。大部分的结果是类似的宏观-微观模型，以及在最近的Hartree-Fock-Bogolyubov计算与Gogny相互作用，在他们的解释有一些差异。特别是对258 Fm的低能裂变模式提出了另一种解释。
A static microscopic study of potential-energy surfaces within the Skyrme-Hartree-Fock-plus-BCS model is carried out for the 256Fm and 258Fm isotopes with the goal of deducing some properties of spontaneous fission. The calculated fission modes are found to be in agreement with the experimentaly observed asymmetric-to-symmetric transition in the fragment-mass distributions and with the high- and low-total-kinetic-energy modes experimentally observed in 258Fm. Most of the results are similar to those obtained in macroscopic-microscopic models as well as in recent Hartree-Fock-Bogolyubov calculations with the Gogny interaction, with a few differences in their interpretations. In particular an alternative explanation is proposed for the low-energy fission mode of 258Fm.