Al3p电子的L-S耦合近似计算  

Approximate Calculation of L-S Coupling of Aluminum 3 p ElectronicAngular Momentums

作　　者：李尊营[1] 赵汝俭[1] 

机构地区：[1]临沂师范学院物理系,山东临沂276005

出　　处：《光谱学与光谱分析》2004年第3期285-287,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金 (699780 1 1 )资助项目

摘　　要：用Nd :YAG脉冲激光器发出的脉冲激光束烧蚀金属Al靶产生Al等离子体。利用时 空分辨技术 ,采集Al等离子体发光信息 ,获得Al原子特征辐射谱。对Al 3p电子的L S耦合进行了类氢粒子的简化处理 ,并用量子力学的相关知识详细地计算了主量子数屏蔽系数α和轨道角动量量子数屏蔽系数s。Al plasma was obtained by a pulsed laser beam, which was produced from a Nd:YAG laser set with Q-switch, ablating metal target Al in Ar. Based on the plasma, radiation of the plasma was recorded with time- and space-resolved technology, so Al characteristic radiation spectra were obtained. According to the spectra, the coupling of aluminum 3p electronic angular momentums was simplified as quasi-hydrogen particle. At the same time, the main quantum and orbit angular quantum shielding coefficients of aluminum nucleus, signed as alpha and s respectively, were carefully figured out with related theories of quantum mechanics. With our experiment, the resonance double lines of aluminum were scaled up at 396.15 and 394.40 nm respectively. As a result of our calculation, the main quantum shielding coefficient of aluminum nucleus was sigma = 10.850 359, and the orbit angular quantum one was s = 7.332 875. Their values were reasonable in terms of the order of magnitude.

关 键 词：铝等离子体 3p电子 L-S耦合 时-空分辨技术 量子力学 轨道角动量 自旋角动量 

分 类 号：O646.9[理学—物理化学]