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Radiative collisional heating at the Doppler limit for laser-cooled magnesium atoms | J. Piilo
; E. Lundh
; K.-A. Suominen
; | Date: |
10 Nov 2003 | Journal: | Phys. Rev. A 70 013410 (2004) | Subject: | Atomic Physics | physics.atom-ph | Affiliation: | Univ. of Turku, Finland, KTH, Stockholm, Sweden | Abstract: | 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 a magneto-optical trap based on the singlet S_0 - singlet P_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 channelling 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. | Source: | arXiv, physics/0311039 | Services: | Forum | Review | PDF | Favorites |
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