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An atomic beam source for the production of metastable rare gas atoms is presented. The set-up is based on a supersonic gas expansion combined with a negative point-to-plane discharge. In contrast to similar devices, there are no perturbing electromagnetic fields in the low-pressure region. The properties of the discharge and the flux of metastables as functions of the discharge parameters have been investigated. Results for helium and argon are shown.
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Weis et al. (1997) studied this question.
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