| ATOMIC AND MOLECULAR PHYSICS |
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Measurement of Absolute Atomic Collision Cross Section with Helium Using 87Rb Atoms Confined in Magneto-Optic and Magnetic Traps |
| WANG Ji-Cheng, ZHOU Ke-Ya, WANG Yue-Yuan, LIAO Qing-Hong, LIU Shu-Tian**
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Department of Physics, Harbin Institute of Technology, Harbin 150001
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| Cite this article: |
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WANG Ji-Cheng, ZHOU Ke-Ya, WANG Yue-Yuan et al 2011 Chin. Phys. Lett. 28 043401 |
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Abstract We present the measurements and calculations of the absolute total collision cross sections for a room-temperature gas of helium using 87Rb atoms confined in either a magneto-optic or a magnetic quadrupole trap. The loss rates from the magneto-optic trap and the pure magnetic trap are compared and show significant differences. The collision cross sections as a function of trap depth for helium gas are obtained. These findings are significant for extracting the information about the different cross sections when the trap depth is changed.
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| Keywords:
34.50.Cx
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Received: 03 October 2010
Published: 29 March 2011
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| PACS: |
34.50.Cx
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(Elastic; ultracold collisions)
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