title: Long-range dispersion coefficients for Li, Li(+), and Be(+) interacting with the rare gases.
abstract: The long-range dispersion coefficients for the ground and excited states of Li, Li(+), and Be(+) interacting with the He, Ne, Ar, Kr, and Xe atoms in their ground states are determined. The variational Hylleraas method is used to determine the necessary lists of multipole matrix elements for He, Li, Li(+), and Be(+), while pseudo-oscillator strength distributions are used for the heavier rare gases. Some single electron calculations using a semiempirical Hamiltonian are also performed for Li and Be(+) and found to give dispersion coefficients in good agreement with the Hylleraas calculations. Polarizabilities are given for some of the Li and Li(+) states and the recommended (7)Li(+) polarizability including both finite-mass and relativistic effects was 0.192 486 a.u. The impact of finite-mass effects upon the dispersion coefficients has been given for some selected interatomic interactions.
authors.affiliation: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China. lytang@wipm.ac.cn
authors.forename: Li-Yan
authors.initials: LY
authors.lastname: Tang
authors.forename: Jun-Yi
authors.initials: JY
authors.lastname: Zhang
authors.forename: Zong-Chao
authors.initials: ZC
authors.lastname: Yan
authors.forename: Ting-Yun
authors.initials: TY
authors.lastname: Shi
authors.forename: J
authors.initials: J
authors.lastname: Mitroy
mesh_terms: D001608:Beryllium / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D005741:Noble Gases / Q000737:chemistry*
chemical_list: D005741:Noble Gases; D008094:Lithium; D001608:Beryllium