Collisional rates for asymmetrical top molecules

Autor:	W. H. Kegel, S. Chandra
Rok vydání:	2000
Předmět:	Physics chemistry General Physics and Astronomy Molecule chemistry.chemical_element Equilibrium equation Atomic physics Kinetic energy Spin (physics) Carbon
Zdroj:	Astronomy and Astrophysics Supplement Series. 142:113-118
ISSN:	1286-4846 0365-0138
DOI:	10.1051/aas:2000142
Popis:	Collisional rate coefficients for rotational transitions in C3 H2 and SiC2 due to collisions with H2 molecules are calculated. The C3 H2 has two distinct species, ortho and para, whereas the SiC2 has only ortho specie due to spin statistics for the identical carbon nuclei. For ortho- and para-C3 H2 we accounted for 47 and 48 energy levels, respectively. The calculations are done for the kinetic temperatures 30, 60, 90, and 120 K. For ortho-SiC2 , we accounted for 40 energy levels and the calculations are done for the kinetic temperatures 25, 50, 75, 100, and 125 K. The results are reported here for the transitions in the upward direction. The values for the downward direction can easily be calculated with the help of the detailed equilibrium equation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6a7ed38274d105f830c992e52676d5d8 https://doi.org/10.1051/aas:2000142 Zobrazit plný text záznamu