Mg同位素经典禁戒区中粒子的配对、连续和形变效应
Effects of pairing, continuum, and deformation on particles in the classically forbidden regions for Mg isotopes
摘要:
基于变形的相对论Hartree-Bogoliubov理论,用PC-PK 1方法研究了镁同位素的经典禁戒区粒子。通过对中子和质子半径的分析,发现与经验值的最大偏差出现在中子晕核$^{42}$ Mg和$^{44}$ Mg处。一致地,在$^{42}$ Mg和$^{44}$ Mg处发现经典禁戒区域中的中子总数显著增加,其中包括连续区中的中子数。它示出的变形效果,在一般情况下,增加了粒子的数量在经典的禁止区域低于连续阈值。最深束缚的单粒子态在形变引起的增加中起主导作用。
英文摘要:
Particles in the classically forbidden regions are studied based on the deformed relativistic Hartree-Bogoliubov theory in continuum with PC-PK1 for magnesium isotopes. By analyzing the neutron and proton radii, it is found that the largest deviations from the empirical values appear at the predicted neutron halo nuclei $^{42}$Mg and $^{44}$Mg. Consistently, notable increases at $^{42}$Mg and $^{44}$Mg are found in the total number of neutrons in the classically forbidden regions that includes the number of neutrons in continuum. It is shown that the deformation effect, in general, increases the number of particles in the classically forbidden regions below the continuum threshold. The most deeply bound single-particle states play the dominant roles in the increase caused by deformation.
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