A small, electrodeless lamp has been developed which emits light at 2537 Å suitable for mercury optical pumping experiments. The light is intense, slightly self‐reversed, and has a low noise level. The lamp, consisting of a 1 cm diam bulb containing argon and mercury, is excited by a 100 MHz transistor oscillator. The total power consumed by the circuit is 3 W.

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Preliminary design and properties of lamp were first reported by J. H. Simpson and J. McKendry in AD‐486‐135 (1966) (available from Clearinghouse for Federal Scientific and Technical Information).
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Research grade, prepared by Air Reduction Co.
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J. H. Simpson (private communication).
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Thin Film Products, Cambridge, Massachusetts.
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