Debye屏蔽势下的Na原子

Na atom under Debye screened potential

结合自由Na原子的l-依赖模型势,采用B-样条基组展开方法计算了等离子体环境中Na原子的的基态能量、振子强度、偶极极化率、四极极化率、八极极化率等随Debye长度的变化.其中原子的等离子体效应采用Debye屏蔽模型.计算结果与其他研究者的结果符合得很好;在Debye屏蔽等离子体环境下下基态能量的结果与Sahoo和Li用其他模型所得的结果基本一致;电偶极、四极和八极极化率随Debye长度的变化趋势一致,数值结果和Li和Kar的数量级一致.

Combined with the l-dependent model potential of free Na atom ,the ground state energies ,os-cillator strengths ,dipole ,quadrupole ,and octupole polarizabilities for Na atom in plasma environment have been calculated using the B -spline basis set expansion method .The effect of Na atom in plasma environment is represented by the Debye screened potential ,w hich describes effectively the averaged effect of the plasma environment on atomic spectra .The ground state energies for Na atom in plasma en-vironment are in agreement with Sahoo’s and Li’s .The changes of dipole ,quadrupole and octupole po-larizabilities with the length of Debye are in agreement with the results of Li and Kar .