Chemical Spectroscopy and Photochemistry in the Vacuum-Ultraviolet 1974
DOI: 10.1007/978-94-010-2153-1_27
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Photoionization and Fragmentation of Polyatomic Molecules

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Cited by 5 publications
(2 citation statements)
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“…Thus, one can safely neglect the radiative decay of NO 2 + ã 3 B 2 . By measuring the relative intensities of metastable NO 2 + signals in the photoionization efficiency curves of NO 2 , Chupka estimated the dissociation lifetimes of NO 2 + ã 3 B 2 (0, n 2 ,0) as follows: τ ≥ 150 μs for n 2 = 0, τ = 55 μs for n 2 = 1, τ = 15 μs for n 2 = 2, τ ≤ 5 μs for n 2 = 3. Chupka's lifetime values are 1 order of magnitude shorter than ours but almost parallel ours.…”
Section: Discussionmentioning
confidence: 99%
“…Thus, one can safely neglect the radiative decay of NO 2 + ã 3 B 2 . By measuring the relative intensities of metastable NO 2 + signals in the photoionization efficiency curves of NO 2 , Chupka estimated the dissociation lifetimes of NO 2 + ã 3 B 2 (0, n 2 ,0) as follows: τ ≥ 150 μs for n 2 = 0, τ = 55 μs for n 2 = 1, τ = 15 μs for n 2 = 2, τ ≤ 5 μs for n 2 = 3. Chupka's lifetime values are 1 order of magnitude shorter than ours but almost parallel ours.…”
Section: Discussionmentioning
confidence: 99%
“…Through the rate constant k ( E ), this time selection is equivalent to the selection of a relatively narrow range of internal energies. Accordingly, the internal-energy distribution of the parent ions is given by the product of a transmission function, T ( E ), that depends on the rate constant k ( E ), ,, and of the branching ratio R ( E ) corresponding to the selected dissociation channel (here, C 4 H 4 + + C 2 H 2 ), that is, the ratio between the ion current for the fragment of interest and the total ion current at internal energy E T ( E ) = A [ exp ( k ( E ) τ 1 ) exp ( k ( E ) τ 2 ) ] R ( E ) where A is a normalization constant.…”
Section: Methodsmentioning
confidence: 99%