The atomic cloud was still drifting across the skies of the planet。 原子云层还在地球的天空上漂浮着。
2.
Usually the magneto - optical trap is used to obtain the cold atoms from the vapor . it is reported that experiments for obtaining the ultra - cold cesium atoms by optical molasses directly from the vapor cell without mot . the lowest temperature achieved for the cesium atomic cloud was 3k . the relationship between the temperature and the detuning of cooling laser was measured 报告了采用直接从铯蒸汽气室而不用磁光阱实现了光学粘团的方法。用此办法得到了3的铯的超冷原子团。这是我国目前用激光冷却方法得到的最低温度。
