论文标题
估计来自具有连续对相关性的精确汉密尔顿的钙同位素的中子滴管线的位置
Estimate of the location of the neutron drip line for calcium isotopes from an exact Hamiltonian with continuum pair correlations
论文作者
论文摘要
如今，核图的钙同位素链的东部区域是活性很大的。对稳定极限的实验评估是有意义的，以确认或改善微观理论模型。这项工作的目的是从配对汉密尔顿的精确溶液中提供钙同位素的滴水线，该溶液明确地融合了与能量连续谱的相关性。修改的理查森方程包括与通过连续粒子水平密度建模的连续能量谱的相关性，用于求解多体系统。使用了三个模型，两个具有核心40CA和48CA的Isospin独立模型，以及一个依赖性模型。从理查森方程的解决方案计算出一个和两个中子的分离能以及结合状态和连续态的职业概率。一个粒子滴在细胞核57CA处，而在Isospin Indepention Model的Nucleus 60CA上发现了两个中子滴线，而依赖Isospin的滴水线在66CA下。
The eastern region of the calcium isotope chain of the nuclei chart is, nowadays, of great activity. The experimental assessment of the limit of stability is of interest to confirm or improve microscopic theoretical models. The goal of this work is to provide the drip line of the calcium isotopes from the exact solution of the pairing Hamiltonian which incorporates explicitly the correlations with the continuum spectrum of energy. The modified Richardson equations, which include correlations with the continuum spectrum of energy modeled by the continuum single particle level density, is used to solve the many-body system. Three models are used, two isospin independent models with core 40Ca and 48Ca, and one isospin dependent model. One and two-neutron separation energies and occupation probabilities for bound and continuum states are calculated from the solution of the Richardson equations. The one particle drip line is found at the nucleus 57Ca, while the two neutron drip line is found at the nucleus 60Ca from the isospin independent model and at 66Ca from the isospin dependent one.
