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Isotope effect on t...
Isotope effect on the formation of CN by radiative association reactions
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Giani, L. (author)
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- Zamecnikova, Martina Simsova Nee (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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Di Genova, G. (author)
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Ceccarelli, C. (author)
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Balucani, N. (author)
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- Nyman, Gunnar, 1957 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: AIP ADVANCES. - 2158-3226. ; 14:3
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
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- The formation of CN and its isotopologue (CN)-N-15 through radiative association has been investigated. We considered two processes for the collisions of ground state C(P-3) and N(S-4) atoms (A(2)Pi -> X-2 Sigma(+) and b(4)Pi -> a(4)Sigma(+)), as well as, for the first time, we investigated the radiative association of ground state C(P-3) and excited N(D-2) atoms (B-2 Sigma(+) -> X-2 Sigma(+)). The cross-sections for the three processes have been calculated using semi-classical, quantum mechanical, and Breit-Wigner theories. The rate constants, derived from the combination of semi-classical and Breit-Wigner results, have been fitted to the Kooij formula to be used in astrochemical modeling. The rate constant for the B-2 Sigma(+) -> X-2 Sigma(+) process dominates in the investigated temperature range (10-10 000 K), when its own asymptotic energy is used as a reference level. Moreover, the B-2 Sigma(+) -> X-2 Sigma(+ )process presents the most pronounced isotope effect on the rate constant. We suggest considering these newly investigated radiative association processes for the formation of CN and (CN)-N-15 in the interstellar medium.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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