An oscillator circuit to produce a radio-frequency discharge and application to metastable helium saturated absorption spectroscopy

The Review of Scientific Instruments
F MoronC I Westbrook

Abstract

We present a rf gas discharge apparatus which provides an atomic frequency reference for laser manipulation of metastable helium. We discuss the biasing and operation of a Colpitts oscillator in which the discharge coil is part of the oscillator circuit. Radiofrequency radiation is reduced by placing the entire oscillator in a metal enclosure.

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