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arXiv 0909.1233nucl-th
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协变密度泛函理论中锕系和超重核的fission势垒

The fission barriers in Actinides and superheavy nuclei in covariant density functional theory

S. Karatzikos, A. V. Afanasjev, G. A. Lalazissis, P. Ring

摘要:

在相对论Hartree Bogoliubov(RHB)理论和相对论平均场(RMF)+BCS计算中研究了对关联对裂变势垒的影响。它的结论是,在通常的RMF+BCS计算的恒定间隙近似不提供一个足够的描述的障碍。RHB计算表明,有一个很大的差异,在预测的势垒高度之间的零范围和有限范围的配对力,即使在这两个力的配对强度被调整到相同的值的配对间隙在基态的情况下。

英文摘要:

The impact of pairing correlations on the fission barriers is investigated in Relativistic Hartree Bogoliubov (RHB) theory and Relativistic Mean Field (RMF)+BCS calculations. It is concluded that the constant gap approximation in the usual RMF+BCS calculations does not provide an adequate description of the barriers. The RHB calculations show that there is a substantial difference in the predicted barrier heights between zero-range and finite range pairing forces even in the case when the pairing strengths of these two forces are adjusted to the same value of the pairing gap at the ground state.

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