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中文摘要：
在QUIC阱中经蒸发冷却获得了2×10^5个｜F=2，mF=2〉态的”Rb原子气体的玻色·爱因斯坦凝聚．验证了紧束缚状态下原子云的轴向尺寸的变化作为BEC相变的判据，观察了从热原子气体到玻色．爱因斯坦凝聚的相变过程．测量了自由膨胀过程中BEC的纵横比变化，并和理论预言进行了对比．
英文摘要：
By evaporative cooling in QUIC trap, Bose-Einstein condensate （BEC） was achieved with 2 ×10^587^Rb atoms in ｜ F = 2, mF = 2） state. We have demonstrated the criterion of BEC transition by the variation of the axial size of the atoms in tight confinement, and observed phase transition from thermal atomic gases to Bose-Einstein condensate, and measured the shift of aspect ratio of BEC during free expansion, which compared with theoretical prediction.
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