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Hyperfine Structure in the Spark Spectrum of Iodine

Abstract

IN a recent short note1, Th. Schmidt states that he cannot agree with my measurements and conclusions relating to the hyperfine structures of two lines in the iodine spark spectrum. In my analysis of 33 terms in this spectrum2, I found that in eight there were deviations from the interval rule. Amongst these the terms with J = 2 did not fit the quadratic interaction law of the type suggested by Schüler and Sclimidt3 and by Casimir4, but could be fitted into a cubic law: E = A + B cos IJ + C cos2 IJ + D cos3 IJ.

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References

  1. Schmidt, T., Z. Phys., 113, 439, (1939).

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  2. Tolansky, S., Proc. Roy. Soc., A, 170, 205 (1939).

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  3. Schüler, H., and Schmidt, H., Z. Phys., 98. 239 (1939).

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  4. Casimir, H., Physica, 7, 719, (1935).

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  5. Murakawa, K., Z. Phys., 112, 234, (1939).

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TOLANSKY, S. Hyperfine Structure in the Spark Spectrum of Iodine. Nature 144, 754–755 (1939). https://doi.org/10.1038/144754b0

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