Letter | Published:

Prevention of Reversal in Mercury-198 Lamps

Naturevolume 180page1476 (1957) | Download Citation

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Abstract

THE green emission line 5461 A. of mercury-198 has been proposed by Meggers1 as a primary standard of wave-length, and is one of the lines being considered as the basis for a redefined international metre. The line has much to recommend it in its sharpness, isolation from other lines, convenience of excitation, etc.

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References

  1. 1

    Meggers, W. F., and Kessler, K. G., J. Opt. Soc. Amer., 40, 737 (1950).

  2. 2

    Pringsheim, “Fluorescence and Phosphorescence” (Interscience Publishers, Ltd., London, 1949).

  3. 3

    Baird, K. M., and Smith, D. S., Canad., J. Phys., 35, 455 (1957).

  4. 4

    Margenau, H., and Watson, W. W., Rev. Mod. Phys., 8, 44 (1936).

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Affiliations

  1. Division of Applied Physics, National Research Council, Ottawa

    • K. M. BAIRD
    •  & D. S. SMITH

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https://doi.org/10.1038/1801476a0

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