Observation and temperature measurement of the sympathetically cooled ions in an rf trap

Author

Hasegawa, T. ; Shimizu, T.

Author_Institution

Dept. of Electron. & Comput. Sci., Sci. Univ. of Tokyo, Japan

fYear

2000

fDate

14-19 May 2000

Firstpage

196

Lastpage

197

Abstract

The barium ions are trapped with the laser-cooled magnesium ions simultaneously in an rf trap and cooled sympathetically. Sympathetically cooled ions are one of the candidates of accurate optical frequency standard. The barium ions are ionized by the charge transfer with the magnesium ions for avoiding the loss due to the shallow trapping potential. The temperature of the barium ions is measured and the effect of the sympathetic cooling is observed. It is also found that the application of the ionization by the charge transfer to other ion species is possible.

Keywords

barium; charge exchange; frequency standards; ionization; magnesium; radiation pressure; temperature measurement; trapped ions; Ba; Ba ions; Mg; charge transfer; cooled ions; ion species; ionization; laser-cooled Mg ions; optical frequency standard; rf trap; shallow trapping potential; sympathetic cooling; temperature measurement; Atom lasers; Barium; Charge transfer; Cooling; Electron traps; Ionization; Magnesium; Radio frequency; Resonant frequency; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 2000 Conference on

Conference_Location

Sydney, NSW, Australia

Print_ISBN

0-7803-5744-2

Type

conf

DOI

10.1109/CPEM.2000.850943

Filename

850943