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Showing papers in "Journal of the Indian Institute of Science in 1958"


Journal ArticleDOI
TL;DR: The ultraviolet bands of mercury bromide have been excited in uncondensed discharge and photographed with a quartz Littrow spectrograph as mentioned in this paper, showing that the bands in the region lambda 2900 a to 2770a have been analysed into two systems which may form the two components of a2 II -2 sigma electronic transition with a 2 II interval equal to 969·4 cm-1.
Abstract: The ultraviolet bands of mercury bromide have been excited in uncondensed discharge and photographed with a quartz Littrow spectrograph. The class II system, lying between\lambda 2900 a to 2700 a, suggested byWieland as due to the triatomic molecule, has been studied in detail and ascribed to the diatomic molecule. The bands in the regionlambda 2900 a to 2770a have been analysed into two systems which may form the two components of a2 II –2 \sigma electronic transition with a2 II interval equal to 969·4 cm–1.Another system most probably due to2 \sigma–2 \sigma has been observed in the region\lambda 2770 to 2720.

4 citations