Negative-ion mass spectrometric study of ion-pair formation in the vacuum ultraviolet. IV. CH4→H−+CH+3 and CD4→D−+CD+3
- 1 May 1991
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 94 (9) , 6003-6006
- https://doi.org/10.1063/1.460435
Abstract
Ion‐pair formation from photoexcited methanes, CH*4 →H− +CH+3 and CD*4 →D− +CD+3, has been studied by measuring the efficiency curves of H− and D− using synchrotron radiation. Ion pairs are produced both by direct dissociation and predissociation of the npt2 (n=3–5) Rydberg state converging to the à 2A1 state of CH+4/ CD+4. The 4pt2 and 5pt2 Rydberg states are observed here for the first time.Keywords
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