Letter | Published:

Width of the Green Mercury Line from a 198-Isotope Lamp

Abstract

IN recent years the mercury isotope lamp has been found most useful and convenient for producing fairly bright and extremely sharp emission lines for spectroscopic purposes. Only a fraction of a milligram of mercury-198 is needed for a discharge lamp of this kind, and this isotope can now be produced quite cheaply from gold. This light source has with good reason been proposed for use as a primary standard of wave-length1.

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References

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