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- W2094431190 abstract "We report on an efficient rf-induced forced evaporative cooling of an ensemble of $^{87}mathrm{Rb}$ atoms in state $|F=2,{m}_{F}=2ensuremath{rangle}$ magnetically trapped in a quadrupole-Ioffe configuration trap. The cigar-shaped trap is oriented with its weak confining axis along the direction of gravity leading to, first, a significant separation of the trapping positions for low-field-seeking atoms with different ${m}_{F}$ value and, second, a reduced resonance volume for rf-induced evaporation confined to a small region around the lower tip of the cigar-shaped ensemble. This results in an enhancement of the evaporation efficiency $ensuremath{alpha}ensuremath{equiv}dmathrm{ln}T/(dmathrm{ln}N)$ due to either reduced or completely vanishing scattering events between cooled and evaporated atoms. We present data illustrating this effect." @default.
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- W2094431190 date "2010-04-22" @default.
- W2094431190 modified "2023-10-14" @default.
- W2094431190 title "Increased efficiency of rf-induced evaporative cooling by utilizing gravity" @default.
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- W2094431190 doi "https://doi.org/10.1103/physreva.81.043414" @default.
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