12CO2 transition frequencies with kHz-accuracy by saturation spectroscopy in the 1.99–2.09 μm region
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00573391" target="_blank" >RIV/61388955:_____/23:00573391 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0343851" target="_blank" >https://hdl.handle.net/11104/0343851</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/D3CP01603J" target="_blank" >10.1039/D3CP01603J</a>
Alternative languages
Result language
angličtina
Original language name
12CO2 transition frequencies with kHz-accuracy by saturation spectroscopy in the 1.99–2.09 μm region
Original language description
Saturation spectroscopy has been used to determine the absolute frequencies of 107 ro-vibrational transitions of the two strongest 12CO2 bands of the 2 μm region. The considered 20012-00001 and 20013-00001 bands are of importance for the CO2 monitoring in our atmosphere. Lamb dips were measured using a cavity ring-down spectrometer linked to an optical frequency comb referenced to a GPS-disciplined Rb oscillator or to an ultra-stable optical frequency. The comb-coherence transfer (CCT) technique was applied to obtain a RF tunable narrow-line comb-disciplined laser source using an external cavity diode laser and a simple electro-optic modulator. This setup allows obtaining transition frequency measurements with kHz-level accuracy. The resulting accurate values of the energy levels of the 20012 and 20013 vibrational states are reproduced with a (1σ)-rms of about 1 kHz using the standard polynomial model. The two upper vibrational states appear thus to be highly isolated except for a local perturbation of the 20012 state leading to an energy shift of 15 kHz at J = 43. A recommended list of 145 transition frequencies with kHz accuracy is obtained providing secondary frequency standards across the 1.99–2.09 μm range. The reported frequencies will be valuable to constrain the zero-pressure frequencies of the considered transitions in 12CO2 retrieval from atmospheric spectra.n
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
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Chemistry Chemical Physics
ISSN
1463-9076
e-ISSN
1463-9084
Volume of the periodical
25
Issue of the periodical within the volume
24
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
16319-16330
UT code for WoS article
001005233400001
EID of the result in the Scopus database
2-s2.0-85163519467