A recirculating cryogenic hydrogen maser

1 June 1987

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement

Vol. IM-36 (2) , 584-587
https://doi.org/10.1109/tim.1987.6312745

Abstract

This paper reports on the design, theory, and initial testing of a new cryogenic hydrogen maser in which hydrogen (H) atoms circulated back and forth between a microwave-pumped state-selecting source and a small split-ring maser cavity. Initial tests observed no measurable fluctuations in the maser frequency at the level of 6 × 10⁻¹³ for measuring times between τ = 1 s and 300 s.

Keywords

MASERS
HYDROGEN
TEMPERATURE MEASUREMENT
THERMAL STABILITY
ATOMIC CLOCKS
FREQUENCY MEASUREMENT
ATOMIC MEASUREMENTS

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