The band spectrum of germanous sulphide in emission

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Abstract
The band spectrum of germanous sulphide, hitherto known only in absorption, has been excited in emission by means of a heavy-current uncondensed discharge through a mixture of sulphur and germanium dioxide contained in a silica tube, in presence of aluminium. Some 20 new bands lying in the region λ3350-3750 have been measured and assigned to the long-λ end of the main (A X) system of GeS. Analysis of the data on higher vibrational levels of the ground state derived from these bands confirms the values of ωe'' and xe'' ωe'' previously determined from measurements of the system in absorption.

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