Investigation of ion dynamics in a Penning trap using a pulse-probe technique

K. Dholakia, G. Zs K. Horvath, W. Power, D. M. Segal, R. C. Thompson

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We demonstrate a pulse-probe method for measuring the ion-cloud rotation frequency in a Penning trap. We show that it is useful over a range of parameters not accessible to the photon correlation method of Dholakia et al. [1]. In particular, the pulse-probe method works for larger clouds than the photon-correlation method. We show that the pulse-probe method measures the space-charge-shifted frequency and gives us the optical pumping times within clouds. Furthermore, we show that, for Mg+ ions, it is capable of measuring much higher degrees of space-charge shift than the photon-correlation method. Improvements to the method may enable its use in measuring diffusion rates for ions in clouds.

Original languageEnglish
Pages (from-to)375-382
Number of pages8
JournalApplied Physics B Laser and Optics
Issue number4
Publication statusPublished - 1995 Apr

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • General Physics and Astronomy


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