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Radiative collisional heating at the Doppler limit for laser-cooled magnesium atoms
KTH, Superseded Departments, Physics.
2004 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 70, no 1Article in journal (Refereed) Published
Abstract [en]

We report Monte Carlo wave function simulation results on cold collisions between magnesium atoms in a strong red-detuned laser field. This is the normal situation, e.g., in magneto-optical traps (MOT). The Doppler limit heating rate due to radiative collisions is calculated for Mg-24 atoms in an MOT based on the S-1(0)-P-1(1) atomic laser cooling transition. We find that radiative heating does not seem to affect the Doppler limit in this case. We also describe a channeling mechanism due to the missing Q branch in the excitation scheme, which could lead to a suppression of inelastic collisions, and find that this mechanism is not present in our simulation results due to the multistate character of the excitation process.

Place, publisher, year, edition, pages
2004. Vol. 70, no 1
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-41827DOI: 10.1103/PhysRevA.70.013410ISI: 000223273200083ScopusID: 2-s2.0-19244365383OAI: diva2:453774
QC 20111103Available from: 2011-11-03 Created: 2011-10-03 Last updated: 2011-11-03Bibliographically approved

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