Chinese Journal of Quantum Electronics, Volume. 23, Issue 5, 603(2006)

Three-body collisions in cesium vapour in the presence of buffer gas

Qiang-hua YUAN... Gang-tai ZHANG, Bao-xia MU, Shu-ying WANG, Xiu-hua CUI, Kang DAI and Yi-fan SHEN* |Show fewer author(s)
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    An experimental study of energy transfer collisions,Cs(6P)+Cs(6S)+He→Cs(5D)+Cs(6S)+He,at thermal energies,was carried out in a cell. Atoms were excited to the 6P3/2 state using a single-mode diode laser. The Cs(6P)atom density and spatial distribution were mapped by monitoring the absorption of a counter-propagating laser beam. The buffer gas enhanced the energy transfer between Cs(6P)and Cs(6S),which was based on the measurement of the fluorescence from the 7D state populated by the Cs(6P)/Cs(5D)collisions. Since the 5D→6P fluorescence(3.0~3.6μm)can not be detected with this experiment,the rate coefficient has been measured relative to the known rate coefficient of the collision(i.e.,6P+5D→6S+7D). The three-body collision rate coefficient [k3 =(2.2±1.1)×10-28cm6s-1]is obtained.

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    YUAN Qiang-hua, ZHANG Gang-tai, MU Bao-xia, WANG Shu-ying, CUI Xiu-hua, DAI Kang, SHEN Yi-fan. Three-body collisions in cesium vapour in the presence of buffer gas[J]. Chinese Journal of Quantum Electronics, 2006, 23(5): 603

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    Paper Information

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    Received: Jun. 10, 2005

    Accepted: --

    Published Online: Jun. 7, 2010

    The Author Email: Yi-fan SHEN (shenyifan01@xju.edu.cn)

    DOI:

    CSTR:32186.14.

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