title: Production of ultracold NH molecules by sympathetic cooling with Mg.
abstract: We show that sympathetic cooling of NH molecules by Mg atoms has a good prospect of success. We carry out calculations on M-changing collisions of NH (3Sigma-) molecules in magnetically trappable states with Mg, using a recently calculated potential energy surface. We show that elastic collision rates are much faster than inelastic rates for a wide range of fields at temperatures up to 10 mK and that the ratio increases for lower temperatures and magnetic fields.
authors.affiliation: Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, United Kingdom.
authors.forename: Alisdair O G
authors.initials: AO
authors.lastname: Wallis
authors.forename: Jeremy M
authors.initials: JM
authors.lastname: Hutson