2005/03/31 by Cheng Zhu, James F. Babb, Alex Dalgarno
Physics and Astronomy · #physics.atom-ph #physics.chem-ph
paper · pdf · doi:10.1103/physreva.71.052710
published as Phys. Rev. A 71 (2005), 052710 · 10 figures
arxiv created 2005/05/07 · arxiv updated 2009/12/01
Quantum mechanical calculations are performed of the emission and absorption profiles of the lithium 2s-2p resonance line under the influence of a helium perturbing gas. We use carefully constructed potential energy surfaces and transition dipole moments to compute the emission and absorption coefficients at temperatures from 200 to 3000 K at wavelengths between 500 nm and 1000 nm. Contributions from quasi-bound states are included. The resulting red and blue wing profiles are compared with previous theoretical calculations and with an experiment, carried out at a temperature of 670 K.