%0 Journal Article
%J Physical Review Letters
%D 2003
%T Ultracold collision properties of metastable alkaline-earth atoms
%A Andrei Derevianko
%A Sergey G. Porsev
%A Svetlana Kotochigova
%A Eite Tiesinga
%A Paul S. Julienne
%X Ultra-cold collisions of spin-polarized 24Mg,40Ca, and 88Sr in the metastable 3P2 excited state are investigated. We calculate the long-range interaction potentials and estimate the scattering length and the collisional loss rate as a function of magnetic field. The estimates are based on molecular potentials between 3P2 alkaline-earth atoms obtained from ab initio atomic and molecular structure calculations. The scattering lengths show resonance behavior due to the appearance of a molecular bound state in a purely long-range interaction potential and are positive for magnetic fields below 50 mT. A loss-rate model shows that losses should be smallest near zero magnetic field and for fields slightly larger than the resonance field, where the scattering length is also positive.
%B Physical Review Letters
%V 90
%8 2003/2/13
%G eng
%U http://arxiv.org/abs/physics/0210076v1
%N 6
%! Phys. Rev. Lett.
%R 10.1103/PhysRevLett.90.063002