Nuclear Spin and Hyperfine Structure in Band Spectra

Details Nuclear Spin and Hyperfine Structure in Band Spectra Nuclear Spin and Hyperfine Structure in Band Spectra

Mar 1932

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1932natur.129..399m&link_type=abstract

Nature, Volume 129, Issue 3254, pp. 399-400 (1932).

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PROF. E. HULTHÉN1 has attempted to show that the splitting of mercury hydride (HgH) band lines into four components, as was found by me2 in the (0, 0), (0, 1), (0, 2) and (0, 3) bands and by R. Rydberg3 in the (2, 1) and (3, 2) bands of the 2II½-->2∑ electronic transition, is a normal isotope effect caused by the difference of masses between the isotopes of mercury. The failure to explain the observed line structure by the usual isotope formula he interprets as indicating the inapplicability of this formula to a mercury hydride molecule, which forms a unique example of an unstable molecule in the 2∑ state. Prof. Hulthén further states that the isotope splittings calculated with the aid of Birge's formula (concerning the vibrational effect) show sufficient agreement with my data, and that there is no need to search for another explanation based on consideration of the magnetic and electric constitution of the nuclei.

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