Motional Resonances of Sympathetically Cooled 44Ca+, Zn+, or Ga+ Ions in a Linear Paul Trap
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概要
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44Ca+, Zn+, or Ga+ ions are sympathetically cooled by Coulomb interaction with laser-cooled 40Ca+ ions, and motional resonances of these ions are observed by monitoring the fluorescence of the 40Ca+ ions. In the experiment of sympathetic cooling of 44Ca+, the ratio of the decrease in the fluorescence signal at the motional resonance of the sympathetically cooled species to that at the motional resonance of the laser-cooled species is almost proportional to the number ratio of the two species. In the case of Ga+ ions as the sympathetically cooled species, the change in the response of sympathetically cooled species becomes larger as the temperature of the ion cloud decreases. Crystallization of an ion cloud which contains both 40Ca+ and Zn+ (or Ga+) is observed.
- 2001-08-15
著者
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Toyoda Kenji
Graduate School Of Engineering Science Osaka University
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Urabe Shinji
Graduate School Of Engineering Science Osaka University
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Kai Yoshiki
Graduate School Of Engineering Science Osaka University
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Watanabe Masayoshi
Kansai Advanced Research Center Communications Research Laboratory
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