JOURNAL ARTICLE

原子Schrǒdinger方程直接求解的相关函数-势谐-广义Laguerre函数方法

从豪 邓沂轩 王

Year: 1996 Journal:   Science in China Series B-Chemistry (in Chinese) Vol: 26 (3)Pages: 249-254   Publisher: Science China Press

Abstract

引入相关函数,将势谐-广义Laguerre函数(PHGLF)方法发展为相关函数-势谐-广义Laguerre函数(CFPHGLF)方法,应用于He,H - ,Li + 和Be 2+ 等三体体系的 n 1 S ( n =1~4)态.得到了比由PHGLF方法更精确的激发态 n 1 S ( n =2~4)本征能量,且从 n =2至4,与Hylleraas组态相互作用(HCI)能量愈来愈近,如He原子的3个激发态的本征能与最精确的HCI之差分别为0.001 827,0.000 666,0.000 376(a. u.);但基态的能量本征值逊于PHGLF方法.结果表明,非势谐函数对基态波函数尚有较显著的贡献,对激发态波函数的贡献较小;在势谐方案下,对基态(1 1 S)应考虑电子间的相关,对于激发态重要的是消除电子与核间的歧点.

Keywords:
Laguerre polynomials Physics Mathematical physics Quantum mechanics

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Topics

Quantum, superfluid, helium dynamics
Physical Sciences →  Physics and Astronomy →  Atomic and Molecular Physics, and Optics
Molecular Spectroscopy and Structure
Physical Sciences →  Chemistry →  Spectroscopy
Atmospheric Ozone and Climate
Physical Sciences →  Earth and Planetary Sciences →  Atmospheric Science

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