Modification of the temperature of trapped cold 87Rb atoms by an ionizing process

28th International Conference on Photonic, Electronic and Atomic Collisions

Ruan, Ya-Ping^1 ; Jia, Feng-Dong^1 ; Sun, Zhen^1 ; Xue, Ping^2 ; Xiang-Yuan, X.U.^2,3 ; Dai, Xing-Can^2 ; Zhong, Zhi-Ping^1

School of Physics, University of Chinese Academy of Sciences, PO Box 4588, Beijing

100049, China^1

State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing

100084, China^2

Department of Physics, Capital Normal University, Beijing

100037, China^3

关键词: Atom numbers;    Detunings;    Exponential law;    Ion density;    Ion-atom interactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/12/122007/pdf
DOI  :  10.1088/1742-6596/488/12/122007

来源: IOP

【 摘 要 】

The temperature of the remaining trapped87Rb atoms gradually decreases as the intensity of the ionizing lasers increases. And the relationship between the temperture and atom number of the remaining87Rb atoms follows an exponential law. This is mainly due to that the photoionized atoms in the state of 52P3/2have higher velocity caused by the detuning of cooling laser, and they escape from the trap after becoming ions. In addition, ion-atom interaction may play a role at a higher ion density.