Abstract
Abstract
In this paper, we numerically studied the effects of mechanical vibration and magnetic fields on evaporative cooling process carried in space station by direct simulation Monte Carlo method. Simulated with the vibration data of international space station, we found that the cooling process would suffer great atomic losses until the accelerations reduced tenfold at least. In addition, if we enlarge the s-wave scattering length five times by feshbach resonance, the phase space density increased to 50 compared to 3 of no magnetic fields situation after 5 s evaporative cooling. We also simulated the two stages crossed beam evaporative cooling process under both physical impacts and obtain 4 × 105
85Rb atoms with a temperature of 8 pK. These results are of significance to the cold atom experiments carried out on space station in the future.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Cited by
5 articles.
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