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Fluorescence Detection and Buffer Gas Cooling of Trapped Mercury Ions in Paul Trap |
| SHE Lei1,2,3;WANG Wen-Ming1,2,3;BAI Lei1,2,3;SUN Huan-Yao1,2,3;ZHU Xi-Wen1,2;LI Jiao-Mei1,2;GAO Ke-Lin 1,2 |
| 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071 3Graduate School of Chinese Academy of Sciences, Beijing 100080 |
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SHE Lei, WANG Wen-Ming, BAI Lei et al 2008 Chin. Phys. Lett. 25 1653-1656 |
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Abstract Hg ions are confined in a hyperboloid ion trap. With the rf discharge 202Hg isotope lamp, the fluorescence signal of trapped Hg ions is observed. By means of buffer gas cooling, the ionic temperature is reduced. As a result, the trapping time is increased and the signal-to-noise ratio (SNR) of the fluorescent signal is improved. The temperature of ion cloud is estimated by measuring the space charge shift.
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39.10.+j
39.39.+d
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Received: 23 December 2007
Published: 29 April 2008
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