Abstract
SOME years ago, Pearse1 reported a band spectrum in magnesium hydride (MgH) at 2430 having a very unusual structure. The source for production of the spectrum was a magnesium arc in hydrogen at a pressure of 1–5 cm. mercury. The band corresponds to a transition from an activated 2II* state to the ground level 2. The R- and P-branches in the 0–0 band are abruptly cut off at R(9) and P(ll), due to a predissociation of the 2II* state at J = 10, while the Q-branch proceeds to higher J-numbers in a normal way.
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References
Proc. Roy. Soc., A, 122, 422; 1928.
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GRUNDSTRÕM, B. Absorption Spectrum of Magnesium Hydride in the Ultra-Violet. Nature 137, 108–109 (1936). https://doi.org/10.1038/137108b0
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DOI: https://doi.org/10.1038/137108b0
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