Experimental and theoretical studies on vacuum ultraviolet absorption cross sections and photodissociation of CH3OH, CH3OD, CD3OH, and CD3OD

2002 ◽  
Vol 117 (4) ◽  
pp. 1633-1640 ◽  
Author(s):  
Bing-Ming Cheng ◽  
Mohammed Bahou ◽  
Wei-Cheng Chen ◽  
Chin-hui Yui ◽  
Yuan-Pern Lee ◽  
...  
Keyword(s):  
Cross Sections ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Absorption ◽  
Theoretical Studies ◽  
Absorption Cross ◽  
Experimental And Theoretical Studies

Vacuum ultraviolet absorption cross sections of SiH4, GeH4, Si2H6, and Si3H8

1986 ◽  
Vol 85 (9) ◽  
pp. 4867-4872 ◽  
Author(s):  
Uichi Itoh ◽  
Yasutake Toyoshima ◽  
Hideo Onuki ◽  
Nobuaki Washida ◽  
Toshio Ibuki
Keyword(s):  
Cross Sections ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Absorption ◽  
Absorption Cross

Vacuum-ultraviolet absorption cross-sections of functionalized cyclic hydrocarbons: Six-membered rings

2019 ◽  
Vol 236 ◽  
pp. 106603 ◽  
Author(s):  
Anna C. Doner ◽  
Matthew G. Christianson ◽  
Jacob C. Davis ◽  
Alanna L. Koritzke ◽  
Alexander Larsson ◽  
...  
Keyword(s):  
Cross Sections ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Absorption ◽  
Absorption Cross ◽  
Cyclic Hydrocarbons

scholarly journals Vacuum-ultraviolet absorption cross-sections of functionalized cyclic hydrocarbons: Five-membered rings

2021 ◽  
Vol 258 ◽  
pp. 107274
Author(s):  
Matthew G. Christianson ◽  
Anna C. Doner ◽  
Alanna L. Koritzke ◽  
Kelsey Frandsen ◽  
Brandon Rotavera
Keyword(s):  
Cross Sections ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Absorption ◽  
Absorption Cross ◽  
Cyclic Hydrocarbons

scholarly journals Ultraviolet absorption cross sections of carbonyl sulfide isotopologues OC<sup>32</sup>S, OC<sup>33</sup>S, OC<sup>34</sup>S and O<sup>13</sup>CS: isotopic fractionation in photolysis and atmospheric implications

2011 ◽  
Vol 11 (19) ◽  
pp. 10293-10303 ◽  
Author(s):  
S. Hattori ◽  
S. O. Danielache ◽  
M. S. Johnson ◽  
J. A. Schmidt ◽  
H. G. Kjaergaard ◽  
...  
Keyword(s):  
Cross Sections ◽  
Carbonyl Sulfide ◽  
Isotopic Fractionation ◽  
High Energy ◽  
Ultraviolet Absorption ◽  
Absorption Cross ◽  
Rare Isotopes ◽  
Mass Dependent ◽  
Franck Condon ◽  
Energy Side

Abstract. We report measurements of the ultraviolet absorption cross sections of OC32S, OC33S, OC34S and O13CS from 195 to 260 nm. The OCS isotopologues were synthesized from isotopically-enriched elemental sulfur by reaction with carbon monoxide. The measured cross section of OC32S is consistent with literature spectra recorded using natural abundance samples. Relative to the spectrum of the most abundant isotopologue, substitution of heavier rare isotopes has two effects. First, as predicted by the reflection principle, the Gaussian-based absorption envelope becomes slightly narrower and blue-shifted. Second, as predicted by Franck-Condon considerations, the weak vibrational structure is red-shifted. Sulfur isotopic fractionation constants (33ε, 34ε) as a function of wavelength are not highly structured, and tend to be close to zero on average on the high energy side and negative on the low energy side. The integrated photolysis rate of each isotopologue at 20 km, the approximate altitude at which most OCS photolysis occurs, was calculated. Sulfur isotopic fractionation constants at 20 km altitude are (−3.7 ± 4.5)‰ and (1.1 ± 4.2)‰ for 33ε and 34ε, respectively, which is inconsistent with the previously estimated large fractionation of over 73‰ in 34ε. This demonstrates that OCS photolysis does not produce sulfur isotopic fractionation of more than ca. 5‰, suggesting OCS may indeed be a significant source of background stratospheric sulfate aerosols. Finally, the predicted isotopic fractionation constant for 33S excess (33E) in OCS photolysis is (−4.2 ± 6.6)‰, and thus photolysis of OCS is not expected to be the source of the non-mass-dependent signature observed in modern and Archaean samples.

Ultraviolet absorption cross sections of infrared laser excited UF6

1985 ◽  
Vol 83 (9) ◽  
pp. 4344-4347 ◽  
Author(s):  
K. C. Kim ◽  
S. M. Freund ◽  
M. S. Sorem ◽  
D. F. Smith
Keyword(s):  
Cross Sections ◽  
Infrared Laser ◽  
Ultraviolet Absorption ◽  
Absorption Cross

Near-infrared–ultraviolet absorption cross sections for Ge nanocrystals in SiO2 thin films: Effects of shape and layer structure

2011 ◽  
Vol 109 (9) ◽  
pp. 094314 ◽  
Author(s):  
Christian Uhrenfeldt ◽  
Jacques Chevallier ◽  
Arne Nylandsted Larsen ◽  
Brian Bech Nielsen
Keyword(s):  
Thin Films ◽  
Cross Sections ◽  
Near Infrared ◽  
Layer Structure ◽  
Ultraviolet Absorption ◽  
Absorption Cross ◽  
Ge Nanocrystals
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