ATOMIC AND MOLECULAR PHYSICS |
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Kinetic Energy of Trapped Ions Cooled by Buffer Gas |
CHEN Liang1,2,3, SHE Lei1,2, LI Jiao-Mei1,2, GAO Ke-Lin1,2 |
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071 3Graduate School of the Chinese Academy of Sciences, Beijing 100049 |
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Cite this article: |
CHEN Liang, SHE Lei, LI Jiao-Mei et al 2010 Chin. Phys. Lett. 27 063201 |
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Abstract The average kinetic energy of 40Ca+ ions is measured by the method of evaporating ions in an rf ion trap. The kinetic energy of the ion 40Ca+ varies from 0.5 eV to 0.2 eV with changing buffer gas pressure from 10-7 mbar to 10-5 mbar. The Brownian motion model is also introduced to calculate the average kinetic energy of the trapped ions.
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Keywords:
32.80.Pj
39.90.+d
03.75.-b
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Received: 12 January 2010
Published: 25 May 2010
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