Cold collisions of alkali-metal atoms and chromium atoms

We present ab initio potentials for ground state lithium, sodium, potassium and rubidium atoms interacting with ground state chromium atoms via the (6)Sigma(+) and (8)Sigma(+) states of the corresponding dimers. Each potential is matched to the leading van der Waals dispersion energy -C-6/R-6 - C-8/R-8 and an exchange energy; we list the values of C-6, C-8 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 (52)chromium atoms and comment on s-wave scattering by (53)chromium atoms.