UGA Excitation Database
CO
Energy levels, Einstein A coefficients, and transition frequencies were obtained from JPL, CDMS, and the calculations of David Neufeld (2010). Explicit quantum scattering calculations were performed on the H-CO PES of Song, van der Avoird, & Gronenboom, 2013, JPhCh A, 117, 7571 for initial J=1,2,3,4,5,10,15,20,25,30,35,40. The rates for all other initial angular momenta were obtained using the Zero Energy Scaling Technique detailed in Walker et al, 2015, ApJ, in preparation.
Reference:
Song, van der Avoird, & Gronenboom, 2013, JPhCh A, 117, 7571.
K. M. Walker, L. Song, B. H. Yang, G. C. Groenenboom, A. van der Avoird, N. Balakrishnan, R. C. Forrey, and P. C. Stancil, "Quantum Calculation of Inelastic CO Collisions with H. II. Pure Rotational Quenching of High Rotational Levels," Astrophys. J., to be submitted (2015).
Rate Coefficient Data
CO-H Lamda format by Walker et al.
CO-H Basecol format by Walker et al.
CO-H Cross section data.
Rate coefficients for state-to-state rotational transitions in CO induced by both para-H2 and ortho-H2 collisions are presented. The results were obtained using the close-coupling method and the coupled-states approximation, with the CO-H2 interaction potential of Jankowski & Szalewicz (2005). Rate coefficients are presented for temperatures between 1 and 3000 K, and for CO( v=0,j) quenching from j=1-40 to all lower j levels.
Reference:
Yang, B. H., Stancil, P.C., Balakrishnan, N.; Forrey, R. C. 2010, ApJ 718, 1062.
Rate Coefficient Data
CO-oH2 Lamda format.
CO-pH2 Lamda format.
CO-oH2 Basecol format.
CO-pH2 Basecol format.