原子核的结团效应研究
Investigations of Cluster Effects in Atomic Nuclei
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摘要: 介绍了近期关于原子核结团效应的研究.利用Tohsaki-Horiuchi-Schuck-R(o)pke (THSR)波函数研究了20Ne和9,10Be等原子核的结团结构.研究发现单个的THSR波函数即可很好地描述原子核的结团态.利用hybrid-THSR-Brink波函数,发现了原子核结团的非局域化动力学性质.拓展了THSR波函数并使其能够应用于Ⅳ≠Z的原子核之中.这一波函数正确地重现了9,10Be同位素的较低能级中的核分子轨道结构.还讨论了丰质子/中子原子核中的α-衰变过程.研究发现质子/中子皮对α-衰变寿命有显著影响.Abstract: We introduce our recent works on the clustering effects in atomic nuclear systems.The clustering structures for 20Ne and 9,10Be isotopes are studied with the Tohsaki-Horiuchi-Schuck-R(o)pke (THSR) wave function.It is found that a single THSR wave function can provide good description for the cluster state.The nonlocalised aspect of cluster dynamics is discovered with the hybrid-THSR-Brink wave function.Extensions are made for the THSR wave function to enable studies of N ≠ Z nuclei.The nuclear molecular orbit structures in low lying states of 9,10Be isotopes are correctly reproduced with this wave function.We also discuss the α-decay processes for proton/neutron-rich nuclei.The effect of proton/neutron skin is found to be considerable on α-decay half-life.
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