A Comparison of Atomic Beam Frequency Standards

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STANDARD frequencies obtained from various cæsium atomic beam frequency standards have been compared in a number of instances1–4. The results of Holloway et al. 1 showed agreement to about 2 × 10−10 between the commercial beam standards developed and manufactured by the National Company and the atomic standard at the National Physical Laboratory, Teddington, England4.

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  1. 1

    Holloway, J., Mainberger, W., Reder, F. H., Winkler, G. M. R., Essen, L., and Parry, J. V. L., Proc. Inst. Radio Eng., 47, 1732 (1959).

  2. 2

    McCoubrey, A. O., Inst. Rad. Eng. Trans. on Instrumentation, PGI, I–7, 203 (1958).

  3. 3

    Mockler, R. C., Beehler, R. E., and Barnes, J. A., “Quantum Electronics—A Symposium”, edit. by Townes, C. H., 127 (Columbia University Press, 1960).

  4. 4

    Essen, L., and Parry, J. V. L., Phil. Trans. Roy. Soc., A, 250, 45 (1957).

  5. 5

    Barnes, J. A., and Heim, L. E., “A High Resolution Ammonia Maser Spectrum Analyzer” (to be published).

  6. 6

    Markowitz, W., Hall, R. G., Essen, L., and Parry, J. V. L., Phys. Rev. Letters, 1, 106 (1958).

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BEEHLER, R., MOCKLER, R. & SNIDER, C. A Comparison of Atomic Beam Frequency Standards. Nature 187, 681–682 (1960) doi:10.1038/187681a0

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