Ultracold atomic collisions in tight harmonic traps: Perturbation theory, ionization losses and application to metastable helium atoms
arXiv:physics/0408125 · doi:10.1088/0953-4075/37/22/014
Abstract
Collisions between tightly confined atoms can lead to ionization and hence to loss of atoms from the trap. We develop second-order perturbation theory for a tensorial perturbation of a spherically symmetric system and the theory is then applied to processes mediated by the spin-dipole interaction. Redistribution and loss mechanisms are studied for the case of spin-polarized metastable helium atoms and results obtained for the five lowest s states in the trap and trapping frequencies ranging from 1 kHz to 10 MHz.
13 pages, LaTeX2e
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Cited by in corpus (6)
- Cold and trapped metastable noble gases
- Experiment-friendly formulation of quantum backflow
- Spin-dipole induced lifetime of the least-bound quintet sigma state of He(2S)+He(2S)
- Laser Intensity Dependence of Photoassociation in Ultracold Metastable Helium
- Autoionization of spin-polarized metastable helium in tight anisotropic harmonic traps
- Ultracold homonuclear and heteronuclear collisions in metastable helium