里德伯原子向超冷等离子体的自发转化

The transformation of ultra-cold Rydberg atom to plasma

在铯原子MOT中,利用三光子激发冷原子获得超冷里德伯原子,改变里德伯原子间的相互作用时间,获得超冷等离子体的信号.研究了里德伯原子向超冷等离子体的自发转化过程和里德伯原子的初始电离机理.

Uhra-cold Rydberg atoms are obtained using three-photon excitation in the Cs magneto-optical trap（MOT）, and the signals of the plasma are measured through changing the interaction time. The spontaneous evolution and the ionization mechanism are investigated.