Deactivation of I(52P1/2) by chemical reaction with HBr and DBr
- 15 July 1977
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 67 (2) , 509-516
- https://doi.org/10.1063/1.434906
Abstract
The collisional deactivation of electronically excited iodine atoms, I (5P1/2), by CH4, C3H8, HBr, and DBr has been investigated using time‐resolved atomic resonance spectroscopy. This technique permits direct determination of the yield of I (5 2P3/2) following the deactivation of the excited atoms by the added gas. The experiment demonstrated that the deactivation of I (5 2P1/2) by CH4 and C3H8 proceeds by physical quenching, but deactivation by HBr and DBr occurs via metathetical chemical reaction to form HI+Br(4 2P3/2). This nonadiabatic reaction is discussed in the context of a curve‐crossing model involving vibrationally excited virtual states of the deactivating molecule.Keywords
This publication has 25 references indexed in Scilit:
- I* (5 2P1/2) quenching by hydrogen halidesThe Journal of Chemical Physics, 1976
- Collisional deactivation of Br(4 2P1/2) by hydrogen isotopesThe Journal of Chemical Physics, 1976
- Electronic-to-vibrational energy transfer from Br (42P
1 2 to HFChemical Physics, 1976 - Isotope effects in the quenching of electronically excited atoms. Part 4.—Quenching of I(52P½) by hydrogen and deuterium halides, H2O and D2OJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1976
- Effect of reagent electronic excitation on the chemical reaction Br(2P1/2,3/2)+HIThe Journal of Chemical Physics, 1975
- Infrared molecular lasers pumped by electronic-vibrational energy transfer from Br(42P1/2): CO2, N2O, HCN, and C2H2Applied Physics Letters, 1975
- Calculation of spin orbit relaxation rates by near resonant E → V energy transferChemical Physics Letters, 1974
- Laser-excited electronic-to-vibrational energy transfer from Br(42P1/2) to HCl and HBrThe Journal of Chemical Physics, 1974
- Isotope effects in the quenching of electronically excited atoms. Part 3.—Quenching of I(52P½) by HDJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1974
- Electronically Excited Halogen AtomsPublished by Wiley ,1971