Formation of NaCl by radiative association in interstellar environments
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10452946" target="_blank" >RIV/00216208:11320/22:10452946 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ifYW_0zpUg" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ifYW_0zpUg</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202142965" target="_blank" >10.1051/0004-6361/202142965</a>
Alternative languages
Result language
angličtina
Original language name
Formation of NaCl by radiative association in interstellar environments
Original language description
Context. Radiative association is a possible way of sodium chloride (NaCl) formation in interstellar and related environments. Theoretical studies are essential since laboratory experiments are unavailable and difficult to perform. Aims. The total rate coefficient was calculated for the formation of NaCl by radiative association at 30-750 K. Methods. We included two contributing processes for the total rate-coefficient computation. One of them takes the nonadiabatic coupling between the two lowest (1)sigma(+) states, X-1 sigma(+) and Beta(1)sigma(+), into account. The other one was calculated conventionally as a single channel and started in the continuum of the A(1)pi state. The individual rate coefficients were calculated from cross sections obtained up to 0.8 eV, which enabled us to calculate the rate coefficients up to 750 K. The cross section was also calculated for a one-state process within the X-1 sigma(+) state. Results. The nonadiabatic coupling enhances the formation of NaCl by radiative association by two orders of magnitude at about 30 K and by around one order of magnitude at about 750 K. The single-channel process starting in the continuum of the A(1) pi state starts to contribute above around 200 K. The one-state transition model, within the X-1 sigma(+) state, is not an adequate approximation for collisions in (1)sigma(+) symmetry. Instead, these collisions are treated in the diabatic representation in the total rate-coefficient calculation. Conclusions. The calculated total rate-coefficient function at 30-750 K can improve the astrochemical reaction networks for the CRL 2688, IRC+10216, and Orion SrcI environments, where NaCl was detected before.
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
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
664
Issue of the periodical within the volume
August 2022
Country of publishing house
FR - FRANCE
Number of pages
9
Pages from-to
A5
UT code for WoS article
000835436000022
EID of the result in the Scopus database
2-s2.0-85135621790