Cold collisions of alkali-metal atoms and chromium atoms

• Published in: Journal of physics. B, Atomic, molecular, and optical physics Vol. 43; no. 23; p. 235208
• Main Authors: Jeung, G-H, Hagebaum-Reignier, D, Jamieson, M J
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 14.12.2010; Institute of Physics
• Subjects: Ab initio calculations; Atomic and molecular collision processes and interactions; Atomic and molecular physics; Calculations and mathematical techniques in atomic and molecular physics (excluding electron correlation calculations); Chromium; Collisions; Electronic structure of atoms, molecules and their ions: theory; Exact sciences and technology; Ground state; Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions; Interatomic potentials and forces; Lithium; Physics; Potassium; Rubidium; Scattering; Sodium; Atom-atom collisions; Ground states; Sodium; Alkali metals; Chromium; Theoretical study; Lithium; Rubidium Atoms; Ab initio calculations; Rubidium; Potassium; Scattering lengths
• ISSN: 0953-4075; 1361-6455
• DOI: 10.1088/0953-4075/43/23/235208

We present ab initio potentials for ground state lithium, sodium, potassium and rubidium atoms interacting with ground state chromium atoms via the 6 Delta *S+ and 8 Delta *S+ states of the corresponding dimers. Each potential is matched to the leading van der Waals dispersion energy -C6/R6 - C8/R8 and an exchange energy; we list the values of C6, C8 and the exchange fitting parameters. We present calculated values from quantal and semi-classical approximations for the s-wave scattering length and effective range and the p-wave scattering volume for collisions of each of the alkali-metal atoms lithium, sodium, potassium and rubidium with 52chromium atoms and comment on s-wave scattering by 53chromium atoms.