Fission-barrier heights of neutron-deficient mercury nuclei
Fission-barrier heights of neutron-deficient mercury nuclei
复制标题
缺中子汞核的裂变势垒高度
DOI：
10.1103/physrevc.86.024308
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发表时间：
2012
影响因子：
3.1
通讯作者：
M. Veselsky et al.,
中科院分区：
文献类型：
--
作者：
村上修一;和田真樹;三澤哲郎;M. Veselsky et al.,
本文利用最近测得的Tl的缓发裂变几率，推导了低能裂变的子体同位素Hg的裂变势垒高度。四个交替衰变强度函数和四个变体的统计模型的子核去激发被用来确定裂变势垒高度forHg。根据模型的选择，推导出的裂变势垒高度似乎比理论估计值小10 ~ 40。这一观察也验证了裂变势垒高度提取的延迟裂变的Tl的概率。在提取的裂变势垒高度的传播结果主要是从鞍形配置的配对间隙的大小的不确定性。
The recently measured probabilities of the-delayed fission forTl are used to deduce the fission-barrier heights of the daughter isotopesHg, undergoing low-energy fission. Four alternative-decay strength functions and four variants of the statistical model of de-excitation of the daughter nucleus are used to determine the fission-barrier height forHg. Depending on the choice of the model, the deduced fission-barrier heights appear to be between 10and 40smaller than theoretical estimates. This observation is verified also for fission-barrier heights extracted using the probability of-delayed fission ofTl. The spread in extracted fission-barrier heights results mainly from uncertainties in the magnitude of the pairing gap at the saddle configuration.