Properties of the Hydrogen Maser
Applied Optics, Vol. 1, Issue 1, pp. 55-60 (1962)
http://dx.doi.org/10.1364/AO.1.000055
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Abstract
Properties of the hydrogen maser and details of the apparatus are discussed. Experimental work is described which yields a new value for the hyperfine separation of hydrogen in its ground state. The result is
Δν = 1,420,405,762 ± 4 cps.
This result is based on a value of the hyperfine separation in Cs133 which is taken to be
Δν(Cs133) = 9,192,631,840 cps.
Citation
Daniel Kleppner, H. Mark Goldenberg, and Norman F. Ramsey, "Properties of the Hydrogen Maser," Appl. Opt. 1, 55-60 (1962)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-1-1-55
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