Atomic

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Molecular

• H₂⁺
• H₂
• HD
• HF
• HCl
• CO
• H₂O
• TiO
• CO₂
• SiO

HCl

State-to-state quenching rate coefficients for initial HCl rotational levels of j=1, 2, ..., 20 for temperature between 0.1 and 3000 K are presented. To obtain these rate coefficients,state-to-state quenching cross sections were computed for kinetic energies from 10^-5 to 15000 cm^-1 using close-coupling method and coupled-states approximation.Rotational energy levels were calculated using rotational constant B₀=10.5933 cm^-1 and centrifugal distortion constant D₀=0.00053 cm^-1.Transition frequencies and Einstein A coefficients were taken from JPL.

Reference:

B. H. Yang and P. C. Stancil, "Rotational deexcitation of HCl due to He collisions," Astrophys. J. 783, 92 (2014).

Rate Coefficient Data

HCl+He Lamda format.

HCl+He Basecol format.

HCl+He Stout format.

HCl+He Cross Section Data.