Rotational state-changing collisions of C2H− and C2N− anions with He under interstellar and cold ion trap conditions: A computational comparison
Abstrakt
We present an extensive range of quantum calculations for the state-changing rotational dynamics involving two simple molecular anions that are expected to play some role in the evolutionary analysis of chemical networks in the interstellar environments, C2H− (X1Σ+) and C2N− (X3Σ−), but for which inelastic rates are only known for C2H−. The same systems are also of direct interest in modeling selective photo-detachment experiments in cold ion traps where the He atoms function as the chief buffer gas at the low trap temperatures. This study employs accurate, ab initio calculations of the interaction potential energy surfaces for these anions, treated as rigid rotors, and the He atom to obtain a wide range of state-changing quantum cross sections and rates at temperatures up to about 100 K. The results are analyzed and compared for the two systems to show differences and similarities between their rates of state-changing dynamics.
Cytowania
-
9
CrossRef
-
0
Web of Science
-
8
Scopus
Autorzy (5)
Cytuj jako
Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1063/5.0011585
- Licencja
- Copyright (2020 AIP Publishing)
Słowa kluczowe
Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
-
JOURNAL OF CHEMICAL PHYSICS
nr 152,
ISSN: 0021-9606 - Język:
- angielski
- Rok wydania:
- 2020
- Opis bibliograficzny:
- Franz J., Mant B., González-Sánchez L., Wester R., Gianturco F.: Rotational state-changing collisions of C2H− and C2N− anions with He under interstellar and cold ion trap conditions: A computational comparison// JOURNAL OF CHEMICAL PHYSICS -Vol. 152,iss. 23 (2020), s.234303-
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1063/5.0011585
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 109 razy
Publikacje, które mogą cię zainteresować
Beyond the helium buffer: 12C−2 rotational cooling in cold traps with H2 as a partner gas: interaction forces and quantum dynamics
- B. P. Mant,
- J. Franz,
- R. Wester
- + 1 autorów
Vibrational Quenching of Optically Pumped Carbon Dimer Anions
- M. Nötzold,
- R. Wild,
- C. Lochmann
- + 7 autorów