Abstract
An attempt has been made to secure resonance excitation of HgH by illuminating (1) a mixture of mercury, hydrogen and nitrogen, and (2) a mixture of mercury and water vapor, with the light from a mercury and hydrogen discharge. This discharge emitted a fairly intense HgH spectrum. Weak HgH band radiation was observed which was similar to that secured when the same mixtures were illuminated with a discharge tube which did not emit the HgH radiation. Inability to secure resonance is evidence that the weak band radiation is due to HgH molecules formed in excited states which dissociate after emission. Experimental evidence is presented which indicates that the formation process is Hg63P1+H→HgH2π1/2, 3/2+Δ,where Δ is an energy parameter. Essentially similar results were secured for HgD. Resonance excitation of CdD was observed when a mixture of cadmium and deuterium was illuminated with a cadmium and deuterium discharge.
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