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Stepwise Excitation Processes in Photodissociation and Detection
Author(s) -
Reisler H.,
Radhakrishnan G.,
Sumida D.,
Pfab J.,
Chou J. S.,
Nadler I.,
Wittig C.
Publication year - 1984
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.198400044
Subject(s) - chemistry , photodissociation , ionization , dissociation (chemistry) , fluorescence , excitation , laser , photochemistry , analytical chemistry (journal) , optics , chromatography , ion , physics , electrical engineering , organic chemistry , engineering
Two‐photon processes in which stationary intermediates are involved in the excitation are discussed, and three processes are described in detail: (a) stepwise 2‐photon laser induced dissociation of NCNO at wavelengths 600–800 nm, followed by detection of the CN fragment via laser induced fluorescence (LIF); (b) detection of HONO via a 2‐frequency scheme, in which dissociation is induced at 355 nm and is followed by LIF detection of the OH fragment; (c) stepwise 2‐frequency 2‐photon ionization detection of nascent PO produced via the collision free IR photolysis of aliphatic phosphonates and phosphites. Absorption throughout the B 2 Σ + ‐ X 2 system of PO is followed by ionization using 266 nm radiation.