Observation and temperature measurement of sympathetically cooled ions in an RF trap

Taro Hasegawa, Tadao Shimizu

Research output: Contribution to journalArticle

5 Citations (Scopus)


Barium ions are trapped simultaneously with laser-cooled magnesium ions in a radio-frequency (RF) trap and cooled sympathetically. The barium ions are produced by charge transfer with the magnesium ions and are caught in a shallow trapping potential. The temperature of the trapped barium ions is measured, and it is confirmed that sympathetic cooling is effective. It is demonstrated that charge-transfer ionization is applicable to produce other ion species.

Original languageEnglish
Pages (from-to)556-558
Number of pages3
JournalIEEE Transactions on Instrumentation and Measurement
Issue number2
Publication statusPublished - 2001 Apr 1



  • Charge transfer
  • RF trap
  • Sympathetic cooling

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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