Collisional properties of trapped cold chromium atoms
Atomic Physics
2009-11-10 v1
Abstract
We report on calculations of the elastic cross section and thermalization rate for collision between two maximally spin-polarized chromium atoms in the cold and ultracold regimes, relevant to buffer-gas and magneto-optical cooling of chromium atoms. We calculate ab initio potential energy curves for Cr2 and the van der Waals coefficient C6, and construct interaction potentials between two colliding Cr atoms. We explore the effect of shape resonances on elastic cross section, and find that they dramatically affect the thermalization rate. Our calculated value for the s-wave scattering length is compared in magnitude with a recent measurement at ultracold temperatures.
Keywords
Cite
@article{arxiv.physics/0309076,
title = {Collisional properties of trapped cold chromium atoms},
author = {Zoran Pavlovic and Björn O. Roos and Robin Côté and H. R. Sadeghpour},
journal= {arXiv preprint arXiv:physics/0309076},
year = {2009}
}
Comments
revtex4, 5 pages, 4 figures