类氦原子体系基态能量的双参数变分计算  

The two-parameter variational calculation of the ground state energies of helium-like atom systems

作　　者：马二俊[1] 

机构地区：[1]常熟理工学院物理与电子工程学院,江苏常熟215500

出　　处：《大学物理》2012年第10期18-21,共4页College Physics

摘　　要：采用包含了两电子之间关联坐标的双参数试验波函数,应用变分法计算了氦原子和类氦离子的基态能量,数值计算的结果与实验值相当吻合.计算表明,在变分波函数中显式地引入关联坐标可以有效地提高计算结果的准确度,同时电子之间的关联效应对氦原子基态能量的影响最为明显.The energy levels for the ground states of helium-like atom systems are calculated by virtue of vari- ational method and the twoparameter trial wave function which includes the correlation coordinate between the two electrons of helium-like atoms. The numerical resuhs are in good agreement with the experimental data. The calculated results indicate that the accuracy of the theoretical results can be effectively improved by introducing explicitly the correlation coordinate in the trial wave function and the correlation effects between electrons may influence the ground state energy of helium appreciably.

关 键 词：类氦原子 基态能量 变分法 电子关联 

分 类 号：O562.1[理学—原子与分子物理]