Measurement of line strengths in the à <sup>2</sup>A’ ← X˜ <sup>2</sup>A” transition of HO<inf>2</inf> and DO<inf>2</inf>
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00506626" target="_blank" >RIV/61388955:_____/17:00506626 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0297835" target="_blank" >http://hdl.handle.net/11104/0297835</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jqsrt.2017.07.004" target="_blank" >10.1016/j.jqsrt.2017.07.004</a>
Alternative languages
Result language
angličtina
Original language name
Measurement of line strengths in the à <sup>2</sup>A’ ← X˜ <sup>2</sup>A” transition of HO<inf>2</inf> and DO<inf>2</inf>
Original language description
The absorption spectrum of the à 2A’ ← X˜ 2A” 000–000 band of HO2 and DO2 radicals has been measured in the range 6941–7077 cm−1 with a resolution of around 0.005 cm−1. HO2 and DO2 radicals were generated from the reaction of Cl-atoms with CH3OH and CD3OD, respectively, whereby Cl-atoms were generated by pulsed photolysis of (COCl)2 at 248 nm. One time-resolved absorption curve was measured by cw-Cavity Ring Down Spectroscopy (cw-CRDS) for each wavelength. The relative absorption coefficient for each wavelength was then obtained from the ring down time τ, extrapolated to t = 0 s with respect to the photolysis pulse, and the ring down time τ0 before the photolysis pulse. Absolute absorption coefficients were quantified for several selected lines relative to a well characterized absorption line of HO2 at 6638.21 cm−1 by a second cw-CRDS absorption path. The maximum absorption cross section at 50 Torr Helium was for HO2 the transition N Ka Kc J = 11 0 11 11.5 ← 11 1 11 11.5 with σ7000.28 cm−1 = 2.12 × 10−19 cm2 and for DO2 the doublet transition N Ka Kc J = 18 1 18 18.5 ← 18 0 18 18.5 and 18 1 18 17.5 ← 18 0 18 17.5 with σ7019.83 cm−1 = 2.97 × 10−19 cm2. The full spectrum has been very well reproduced by employing spectroscopic data from earlier works.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Quantitative Spectroscopy and Radiative Transfer
ISSN
0022-4073
e-ISSN
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Volume of the periodical
201
Issue of the periodical within the volume
NOV 2017
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
161-170
UT code for WoS article
000411544100017
EID of the result in the Scopus database
2-s2.0-85024131324