2001/03/20 by F. Pereira Dos Santos, Franck Pereira dos Santos, Francisco J. Perales +12 · 1 citation
Computer Science · Physics and Astronomy · #Advanced Frequency and Time Standards #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #physics.atom-ph
paper · pdf · doi:10.1007/s100530170228
8 pages, 9 figures, Revtex
arxiv created 2001/03/20 · openalex publication_date 2001/04/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present experimental results on the two-body loss rates in a magneto-optical trap of metastable helium atoms. Absolute rates are measured in a systematic way for several laser detunings ranging from -5 to -30 MHz and at different intensities, by monitoring the decay of the trap fluorescence. The dependence of the two-body loss rate coefficient β on the excited state (23P2) and metastable state (23S1) populations is also investigated. From these results we infer a rather uniform rate constant Ksp=(1±0.4)×10-7 cm3/s.