Experiments with separated oscillatory fields and hydrogen masers

Details Experiments with separated oscillatory fields and hydrogen masers Experiments with separated oscillatory fields and hydrogen masers

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990sci...248.1612r&link_type=abstract

Science (ISSN 0036-8075), vol. 248, June 29, 1990, p. 1612-1619.

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Atomic Clocks, Hydrogen Masers, Oscillators, Time Measurement, Molecular Beams, Nuclear Magnetic Resonance, Space Navigation

Scientific paper

Descriptions are given of the methods of separated and successive oscillatory fields and of the atomic hydrogen maser. Their applications to the precision spectroscopy of atoms and molecules are discussed along with specific examples of fundamental measurements best made with such devices. The applications of these methods to atomic clocks are discussed. Cesium-separated oscillatory fields atomic beam clocks are accurate to 10 to the -13th, and hydrogen masers are stable for several hours to 10 to the -15th. A discussion is given of fundamental experiments that require highly stable clocks, such as long-baseline radio astronomy, precise measurements of pulsar frequencies and stabilities, test of relativity theories, and accurate navigation both on the earth and in outer space.

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