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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.
Published in:
Review of Scientific Instruments
(Volume:83
,
Issue:
4
)
Date of Publication: Apr 2012