High resolution absolute absorption cross sections of the B̃1A′–X̃1A′ transition of the CH2OO biradical

2015 ◽  
Vol 17 (48) ◽  
pp. 32539-32546 ◽  
Author(s):  
Elizabeth S. Foreman ◽  
Kara M. Kapnas ◽  
YiTien Jou ◽  
Jarosław Kalinowski ◽  
David Feng ◽  
...  
Keyword(s):  
High Resolution ◽  
Gas Phase ◽  
Urban Area ◽  
Cross Sections ◽  
Atmospheric Chemistry ◽  
Pivotal Role ◽  
Absorption Cross ◽  
Night Time ◽  
Carbonyl Oxides ◽  
Criegee Intermediates

Carbonyl oxides, or Criegee intermediates, are formed from the gas phase ozonolysis of alkenes and play a pivotal role in night-time and urban area atmospheric chemistry.

scholarly journals Determination of the absorption cross-sections of higher order iodine oxides at 355 nm and 532 nm

2020 ◽  
Author(s):  
Thomas R. Lewis ◽  
Juan Carlos Gómez Martin ◽  
Mark A. Blitz ◽  
Carlos A. Cuevas ◽  
John M. C. Plane ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Atmospheric Chemistry ◽  
Absorption Cross Section ◽  
Absorption Cross ◽  
Time Resolved ◽  
Flight Mass Spectrometry ◽  
Iodine Oxides ◽  
Photo Ionization

Abstract. Iodine oxides (IxOy) play an important role in the atmospheric chemistry of iodine. They are initiators of new particle formation events in the coastal and polar boundary layer and act as iodine reservoirs in tropospheric ozone-depleting chemical cycles. Despite the importance of the aforementioned processes, the photochemistry of these molecules has not been studied in detail previously. Here, we report the first determination of the absorption cross sections of IxOy, x = 2, 3, 5, y = 1–12 at λ = 355 nm by combining pulsed laser photolysis of I2/O3 gas mixtures in air with time-resolved photo-ionization time-of-flight mass spectrometry, using NO2 actinometry for signal calibration. The oxides selected for absorption cross section determinations are those presenting the strongest signals in the mass spectra, where signals containing 4 iodine atoms are absent. The method is validated by measuring the absorption cross section of IO at 355 nm, σ355 nm, IO = (1.2 ± 0.1) ×  10–18 cm2, which is found to be in good agreement with the most recent literature. The results obtained are: σ355 nm, I2O3 

High-Resolution Measurements of the Absorption Cross-Sections for O3 and NO2

1997 ◽  
pp. 157-161
Author(s):  
Brion Jean ◽  
A. Chakir ◽  
B. Coquart ◽  
D. Daumont ◽  
A. Jenouvrier ◽  
...  
Keyword(s):  
High Resolution ◽  
Cross Sections ◽  
Absorption Cross

High resolution VUV laser measurements of the CO A 1Π–X 1Σ+ (v’,0) absorption cross sections

1994 ◽  
Author(s):  
D. Malmasson ◽  
A. Vient ◽  
J. L. Lemaire ◽  
A. Le Floch ◽  
F. Rostas
Keyword(s):  
High Resolution ◽  
Cross Sections ◽  
Absorption Cross ◽  
Laser Measurements

High resolution absorption cross sections for the a 2Π-X2 system of ClO

1977 ◽  
Vol 50 (1) ◽  
pp. 101-106 ◽  
Author(s):  
P.H. Wine ◽  
A.R. Ravishankara ◽  
D.L. Philen ◽  
D.D. Davis ◽  
R.T. Watson
Keyword(s):  
High Resolution ◽  
Cross Sections ◽  
Absorption Cross

Atmospheric Chemistry of CHF2CHO:  Study of the IR and UV−Vis Absorption Cross Sections, Photolysis, and OH-, Cl-, and NO3-Initiated Oxidation

2005 ◽  
Vol 109 (16) ◽  
pp. 3652-3662 ◽  
Author(s):  
Stig R. Sellevåg ◽  
Yngve Stenstrøm ◽  
Trygve Helgaker ◽  
Claus J. Nielsen
Keyword(s):  
Cross Sections ◽  
Atmospheric Chemistry ◽  
Absorption Cross

Control of Long-Lived Gas Emissions From Semiconductor Processing Equipment

1994 ◽  
Vol 344 ◽  
Author(s):  
Michael T. Mocella
Keyword(s):  
Thin Film ◽  
Global Warming ◽  
Gas Phase ◽  
Cross Sections ◽  
Semiconductor Industry ◽  
Absorption Cross ◽  
Semiconductor Processing ◽  
Gas Emissions ◽  
Industrial Policies ◽  
Global Warming Potentials

AbstractCertain perfluorocompounds (PFCs) - including CF4, C2F6, SF6, and NF3 - are widely used in gas phase thin film processing applications such as dry etching and CVD chamber cleaning. Through a combination of long atmospheric lifetimes and high infrared absorption cross sections, many PFCs have high global warming potentials (GWPs). Abatement of PFC emissions from semiconductor applications is consistent with existing and developing international, national, and industrial policies for the control of greenhouse gas emissions. For PFC applications in the semiconductor industry, there exist a number of promising options for emissions control. These options include destruction (comprising combustion, plasma, and chemical-thermal routes), recovery, and process replacement.

Gas phase UV absorption cross-sections for a series of hydroxycarbonyls

2012 ◽  
Vol 529 ◽  
pp. 16-22 ◽  
Author(s):  
L. Messaadia ◽  
G. El Dib ◽  
A. Ferhati ◽  
E. Roth ◽  
A. Chakir
Keyword(s):  
Gas Phase ◽  
Cross Sections ◽  
Uv Absorption ◽  
Absorption Cross

High-resolution absorption cross sections of formaldehyde at wavelengths from 313 to 320 nm

2005 ◽  
Vol 7 (1) ◽  
pp. 79 ◽  
Author(s):  
Francis D. Pope ◽  
Carina A. Smith ◽  
Michael N. R. Ashfold ◽  
Andrew J. Orr-Ewing
Keyword(s):  
High Resolution ◽  
Cross Sections ◽  
Absorption Cross
Sign in / Sign up

Export Citation Format

Share Document