Ultracold atomic collisions in tight harmonic traps: perturbation theory, ionization losses and application to metastable helium atoms
Beams, T.J., Peach, G., and Whittingham, I.B. (2004) Ultracold atomic collisions in tight harmonic traps: perturbation theory, ionization losses and application to metastable helium atoms. Journal of Physics B: Atomic, Molecular and Optical Physics, 37 (22). pp. 4561-4570.
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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.
|Item Type:||Article (Refereed Research - C1)|
|Date Deposited:||10 Jun 2009 06:44|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%|
|Citation Count from Web of Science||