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Further Reading
For the ammonia maser, see C.H. Townes and A.L. Schawlow, Microwave Spectroscopy, McGraw-Hill, New York (1954), Chap. 15; M. Brotherton, Masers and Lasers, McGraw-Hill, New York (1964).
M. Elitzur, “Masers in the sky”, Sci. Am., February 1995, p. 52; R. Vessot et al., “Test of relativistic gravitation with a space-borne hydrogen maser”, Phys. Rev. Lett. 45, 2081 (1980).
For atomic clocks: J. Vanier and C. Audouin, The Quantum Physics of Atomic Frequency Standards, Adam Hilger, Bristol (1989); W. Itano and N. Ramsey, “Accurate measurement of time”, Sci. Am., July 1993, p. 46.
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© 2002 Springer-Verlag Berlin Heidelberg
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(2002). Two-State Systems, Principle of the Maser. In: Quantum Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-28805-8_6
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DOI: https://doi.org/10.1007/3-540-28805-8_6
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