Laser excitation and emission spectra of the hexafluorobenzene cation in the gas phase

1981 ◽  
Vol 103 (2) ◽  
pp. 326-329 ◽  
Author(s):  
Trevor Sears ◽  
Terry A. Miller ◽  
V. E. Bondybey
Keyword(s):  
Gas Phase ◽  
Laser Excitation ◽  
Emission Spectra

scholarly journals Reactive quenching of electronically excited NO<sub>2</sub><sup>∗</sup> and NO<sub>3</sub><sup>∗</sup> by H<sub>2</sub>O as potential sources of atmospheric HO<sub><i>x</i></sub> radicals

2018 ◽  
Vol 18 (19) ◽  
pp. 14005-14015 ◽  
Author(s):  
Terry J. Dillon ◽  
John N. Crowley
Keyword(s):  
Gas Phase ◽  
Laser Excitation ◽  
Pulsed Laser ◽  
Work Rate ◽  
Rate Coefficients ◽  
Phase Reaction ◽  
Gas Phase Reaction ◽  
Upper Limit ◽  
Upper Limits ◽  
Electronically Excited

Abstract. Pulsed laser excitation of NO2 (532–647 nm) or NO3 (623–662 nm) in the presence of H2O was used to initiate the gas-phase reaction NO2∗+H2O → products (Reaction R5) and NO3∗+H2O → products (Reaction R12). No evidence for OH production in Reactions (R5) or (R12) was observed and upper limits for OH production of k5b/k5<1×10-5 and k12b/k12<0.03 were assigned. The upper limit for k5b∕k5 renders this reaction insignificant as a source of OH in the atmosphere and extends the studies (Crowley and Carl, 1997; Carr et al., 2009; Amedro et al., 2011) which demonstrate that the previously reported large OH yield by Li et al. (2008) was erroneous. The upper limit obtained for k12b∕k12 indicates that non-reactive energy transfer is the dominant mechanism for Reaction (R12), though generation of small but significant amounts of atmospheric HOx and HONO cannot be ruled out. In the course of this work, rate coefficients for overall removal of NO3∗ by N2 (Reaction R10) and by H2O (Reaction R12) were determined: k10=(2.1±0.1)×10-11 cm3 molecule−1 s−1 and k12=(1.6±0.3)×10-10 cm3 molecule−1 s−1. Our value of k12 is more than a factor of 4 smaller than the single previously reported value.

Laser excitation spectrum of OCS+, Ā 2II3/2 &_;harr X̄ 2II3/2, in the gas phase

1985 ◽  
Vol 115 (4-5) ◽  
pp. 373-377 ◽  
Author(s):  
Martin Ochsner ◽  
Masaharu Tsuji ◽  
John P. Maier
Keyword(s):  
Gas Phase ◽  
Excitation Spectrum ◽  
Laser Excitation

Far-Infrared Emission Spectra of Selected Gas-Phase PAHs: Spectroscopic Fingerprints

Science ◽  
1996 ◽  
Vol 274 (5287) ◽  
pp. 582-583 ◽  
Author(s):  
K. Zhang ◽  
B. Guo ◽  
P. Colarusso ◽  
P. F. Bernath
Keyword(s):  
Gas Phase ◽  
Emission Spectra ◽  
Far Infrared ◽  
Infrared Emission

Gas phase photoacoustic Raman spectroscopy using pulsed laser excitation

1980 ◽  
Vol 51 (5) ◽  
pp. 2823 ◽  
Author(s):  
Gary A. West ◽  
Donald R. Siebert ◽  
Joseph J. Barrett
Keyword(s):  
Raman Spectroscopy ◽  
Gas Phase ◽  
Laser Excitation ◽  
Pulsed Laser
Sign in / Sign up

Export Citation Format

Share Document