Atomic

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Molecular

• H₂⁺
• H₂
• HD
• HF
• HCl
• CO
• H₂O
• TiO
• CO₂
• SiO
• CS
• SO
• SiS

HD

We present rate coefficients for the He-HD and H2-HD collision systems over a range of collision energies from 10^-5 to 5000 cm^-1. Fully quantum mechanical scattering calculations were performed for initial HD rovibrational states of j=0 and 1 for v= 0 to 17 which utilized accurate diatom rovibrational wave functions. Rate coefficients of all Δ v =0, -1, and -2 transitions are reported. Significant discrepancies with previous calculations, which adopted a small basis and harmonic HD wave functions for excited vibrational levels, were found for the highest previously considered vibrational state of v = 3.

Reference:

Nolte, J. L., Stancil, P. C. et al. 2012, ApJ, 744, 62.

Wan, Y. E. et al. 2019, MNRAS, 488, 381.

Rate Coefficient Data

HD-He-T100 BaseCol format.

HD-He-T1000 BaseCol format.

HD-H2-T10000 LAMDA format.

Rate coefficients: v=0-17,J=0-2, as given in Nolte et al., 2012, ApJ, 744, 62 (2012).
Cross sections: v=0-17,J=0-2, as given in Nolte et al., 2012, ApJ, 744, 62 (2012).