CAJ | 학술논문

用 Skyrme-Hartree-Fock模型研究了Ca同位素的纯中子物质的厚度和经典禁区内粒子数随同位旋的变化. 定义了零粒子半径和单粒子半径，并用这两种半径定义方法研究纯中子物质厚度后发现：纯中子物质的厚度明显地受到壳结构的影响，零粒子半径和单粒子半径是探讨中子晕比较合适的物理量. 经典禁区内质子数和中子数的差别可以作为定义中子晕或中子皮的指标.
용 Skyrme-Hartree-Fock모형연구료Ca동위소적순중자물질적후도화경전금구내입자수수동위선적변화. 정의료령입자반경화단입자반경，병용저량충반경정의방법연구순중자물질후도후발현：순중자물질적후도명현지수도각결구적영향，령입자반경화단입자반경시탐토중자훈비교합괄적물리량. 경전금구내질자수화중자수적차별가이작위정의중자훈혹중자피적지표.
The pure-neutron-matter together with the neutron skin or halo in Ca isotopes is studied using the Skyrme-Hartree-Fock model. It is shown that the pure-neutron-matter thickness depends not only on the Fermi levels of the neutrons, but also on the orbital angular momentum of the valence neutrons. A new definition for the thickness of pure-neutron-matter is proposed. Particles in classically forbidden area are also studied. The number of neutrons in the classically forbidden area increases with mass number A, because of the increase in the number of neutrons occupied in the weaklybound open shell. The number of protons in the classically forbidden area, in contrast, decreases with mass number A, because the orbits of protons become more deeply bound. It is shown that the number of particles in the classically forbidden area can give information on the appearance of the halo or skin.