Pressure-broadened atomic Li(2s-2p) line perturbed by ground neon atoms in the spectral wings and core  

作　　者：Sabri Bouchoucha Kamel Alioua Moncef Bouledroua 

机构地区：[1]Physics Department, Badji Mokhtar University [2]Laboratoire de Physique de la Matière et du Rayonnement, Chérif Messaidia University [3]Laboratoire de Physique des Rayonnements, Badji Mokhtar University

出　　处：《Chinese Physics B》2017年第7期67-74,共8页中国物理B（英文版）

摘　　要：Full quantum calculations are performed to investigate the broadening profiles of the atomic lithium Li（2s-2p） resonance line induced by interactions with ground Ne（2s^22p^6） perturbers in the spectral wings and core. The X^2Σ~＋, A^2Π,and B^2Σ~＋ potential-energy curves of the two first low lying Li Ne molecular states, as well as the corresponding transition dipole moments, are determined with ab initio methods based on the SA-CASSCF-MRCI calculations. The emission and absorption coefficients in the wavelength range 550-800 nm and the line-core width and shift are investigated theoretically for temperatures ranging from 130 K to 3000 K. Their temperature dependence is analyzed, and the obtained results are compared with the previous experimental measurements and theoretical works.Full quantum calculations are performed to investigate the broadening profiles of the atomic lithium Li（2s-2p） resonance line induced by interactions with ground Ne（2s^22p^6） perturbers in the spectral wings and core. The X^2Σ~＋, A^2Π,and B^2Σ~＋ potential-energy curves of the two first low lying Li Ne molecular states, as well as the corresponding transition dipole moments, are determined with ab initio methods based on the SA-CASSCF-MRCI calculations. The emission and absorption coefficients in the wavelength range 550-800 nm and the line-core width and shift are investigated theoretically for temperatures ranging from 130 K to 3000 K. Their temperature dependence is analyzed, and the obtained results are compared with the previous experimental measurements and theoretical works.

关 键 词：pressure broadening emission and absorption coefficients LINEWIDTH lineshift 

分 类 号：O562[理学—原子与分子物理]