锕系元素中的第三个极小值--它们存在吗？
Third minima in actinides - do they exist?
摘要：
我们研究了第三，hyperdeformed极小值的存在，在一些偶数，偶数Th，U和Pu核使用伍兹-撒克逊微观宏观模型，很好地再现第一和第二极小值和裂变障碍的锕系元素。在包括足够一般的形状之后，发现先前由Alberwiok等人发现的深（$3 ÷4$ MeV）最小值是虚假的。浅的第三阱可以存在于$^{230,232}$ Th中，其中IIIrd势垒$\le$（分别）为200和330 keV。因此，微观宏观和自洽的预测之间的定性差异的问题得到解决。现在，对铀中表观第三极小值的实验结果的理解成为一个问题。
英文摘要：
We study the existence of third, hyperdeformed minima in a number of even-even Th, U and Pu nuclei using the Woods-Saxon microscopic-macroscopic model that very well reproduces first and second minima and fission barriers in actinides. Deep ($3 ÷4$ MeV) minima found previously by Ćwiok et al. are found spurious after sufficiently general shapes are included. Shallow third wells may exist in $^{230,232}$Th, with IIIrd barriers $\le$ 200 and 330 keV (respectively). Thus, a problem of qualitative discrepancy between microscopic-macroscopic and selfconsistent predictions is resolved. Now, an understanding of experimental results on the apparent third minima in uranium becomes an issue.
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