A tunable dye laser was used to populate selectively a single rotational-vibrational state of N 2 ( B 'E , u' = 0, N' = O-l 5 ) . The population changes induced by collisions with He were determined using time-resolved spectroscopy in a flowing afterglow experiment. Total rotational transfer rates f
Quenching rate constants for N2+(B2Σu+, ν′ = 0,1,2) with N2 and Ne
✍ Scribed by A. Plain; J. Jolly
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 298 KB
- Volume
- 111
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Time-resolved fluorescence hscr-induced spectroscopy was used to determine the quencbin~ rates of the vibrations1 Icvets u' = 0,l and 2 of NG(B *f+ _,,) bv I& and Ne. For bolt2 quenchers rate constants mz found to base a depcndenoz upon _ the vibrational escitation of the Ievef. Tlie radiative Iifctinm of N;(lU '1:. U' = 0, I ~ 2) wxe also determined. ' Associated with the CNRS.
📜 SIMILAR VOLUMES
Tie-resolved fluorescence laser-induced spectroscopy was used to examine the quenching of the vibrational levels v = 0 and u = 1 of N;(B \*C:) by N2\_ The rate coefficients of the quenching reactions are found to be constant over the tempera ture range 300-500 K. The quenching constant for the u = 1
N2B3ng, Y = O-2 and N\*a"v;, Y = 0 were produced by pulsed rodiolysis af nitrogen (100-2000 torr) and fo!lowed by fast kinetic absorption spectroscopy in the second and fifth positive system. T!le rate constants for the denctivation of the species by nitrogen were found to be ~N~A,~ = 1.6i + 0.8; 2.
A vaIue of (9.3 = 1.7) X IO-\*\* cm3 molecule-' s-' has been determined as the rate constant for the quenchinp ai Op(A 3ZG) by N2 at 25OC.
Fluorescence excitation by a tunable dye-laser has been used for measuring the natural iifetime of the OH('ZC) radical, and its chemical lifetime in the presence of atomic hydrogen, molecular hydrogen and argon. For the 0H(2Z+, u = 0, N = 2.J = 3/2) state a natural lifetime of (0.82 + 0.04) wet was