ISSN:
1432-0649
Keywords:
32.80.Pj
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01082274
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