中国物理B ›› 1992, Vol. 1 ›› Issue (3): 173-182.doi: 10.1088/1004-423X/1/3/003

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STUDY OF OPTICAL PUMPING OF ALKALI ATOMIC BEAM IN STRONG MAGNETIC FIELDS

梅刚华, 黄贵龙, 朱熙文, 张原, 刘秩媛, 曾小云   

  1. Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Academia Sinica, Wuhan 430071, China
  • 收稿日期:1991-12-29 出版日期:1992-03-20 发布日期:1992-03-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

STUDY OF OPTICAL PUMPING OF ALKALI ATOMIC BEAM IN STRONG MAGNETIC FIELDS

MEI GANG-HUA (梅刚华), HUANG GUI-LONG (黄贵龙), ZHU XI-WEN (朱熙文), ZHANG YUAN (张原), LIU ZHI-YUAN (刘秩媛), ZENG XIAO-YUN (曾小云)   

  1. Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Academia Sinica, Wuhan 430071, China
  • Received:1991-12-29 Online:1992-03-20 Published:1992-03-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China.

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摘要： Using rate equation formalism, we got an analytic expression describing the optical pumping of an alkali atomic beam in strong megnetic fields. By comparing with the traditional description in single velocity approximation, the influence of velocity distribution in a practical alkali atomic beam on the pumping effect was quantitatively discussed. It turned out that the rate equation treatment in velocity approximation might result in an error within twenty percent. Laser optical pumping of 7Li atomic beam in a strong magnetic field (0.15T) was experimentally studied, and the results are in agreement with the theory in which the velocity distribution is taken into account.

Abstract: Using rate equation formalism, we got an analytic expression describing the optical pumping of an alkali atomic beam in strong megnetic fields. By comparing with the traditional description in single velocity approximation, the influence of velocity distribution in a practical alkali atomic beam on the pumping effect was quantitatively discussed. It turned out that the rate equation treatment in velocity approximation might result in an error within twenty percent. Laser optical pumping of 7Li atomic beam in a strong magnetic field (0.15T) was experimentally studied, and the results are in agreement with the theory in which the velocity distribution is taken into account.

中图分类号:  (Level crossing and optical pumping)

  • 32.80.Xx
42.55.-f (Lasers)