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首页> 外文期刊>Physical review, C >Role of deformation in odd-even staggering in reaction cross sections for Ne-30,Ne-31,Ne-32 and Mg-36,Mg-37,Mg-38 isotopes
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Role of deformation in odd-even staggering in reaction cross sections for Ne-30,Ne-31,Ne-32 and Mg-36,Mg-37,Mg-38 isotopes

机译:变形在Ne-30,Ne-31,Ne-32和Mg-36,Mg-37,Mg-38同位素的反应横截面中的作用

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摘要

We discuss the role of pairing antihalo effect in the observed odd-even staggering in reaction cross sections for Ne-30,Ne-31,Ne-32 and Mg-36,Mg-37,Mg-38 isotopes by taking into account the ground-state deformation of these nuclei. To this end, we construct the ground-state density for the Ne-30,Ne-31 and Mg-36,Mg-37 nuclei based on a deformed Woods-Saxon potential, while for the Ne-32 and Mg-38 nuclei we also take into account the pairing correlation using the Hartree-Fock-Bogoliubov method. We demonstrate that, when the one-neutron separation energy is small for the odd-mass nuclei, a significant odd-even staggering still appears even with finite deformation, although the degree of staggering is somewhat reduced compared to the spherical case. This implies that the pairing antihalo effect in general plays an important role in generating the odd-even staggering in reaction cross sections for weakly bound nuclei.
机译:通过考虑地面,我们讨论了对Ne-30,Ne-31,Ne-32和Mg-36,Mg-37,Mg-38同位素的反应横截面中观察到的偶型偶数惊人的作用的作用 - 这些核的变形。 为此,我们基于变形的木材 - 撒克逊潜力构建NE-30,NE-31和MG-36,MG-37核的地态密度,而NE-32和MG-38核 还要考虑使用Hartree-Fock-Bogoliubov方法的配对相关性。 我们证明,当奇数核的一个中子分离能量小时,即使具有有限变形,仍然存在显着的偶偶,仍然出现,尽管与球面壳相比,交通程度略微减小。 这意味着,对抗卤化效应一般在为弱结合的反应横截面中产生奇数甚至惊人的效果起着重要作用。

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