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Quenching of rotationally excited CO by collisions with H2.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yang, Benhui Stancil, Phillip Balakrishnan, N. Forrey, Robert C. |
| Copyright Year | 2006 |
| Abstract | Quantum close-coupling and coupled-states approximation scattering calculations of rotational energy transfer in CO due to collisions with H2 are presented for collision energies between 10(-6) and 15,000 cm(-1) using the H2-CO interaction potentials of Jankowski and Szalewicz [J. Chem. Phys. 123, 104301 (2005); 108, 3554 (1998)]. State-to-state cross sections and rate coefficients are reported for the quenching of CO initially in rotational levels j2 = 1-3 by collisions with both para- and ortho-H2. Comparison with the available theoretical and experimental results shows good agreement, but some discrepancies with previous calculations using the earlier potential remain. Interestingly, elastic and inelastic cross sections for the quenching of CO (j2 = 1) by para-H2 reveal significant differences at low collision energies. The differences in the well depths of the van der Waals interactions of the two potential surfaces lead to different resonance structures in the cross sections. In particular, the presence of a near-zero-energy resonance for the earlier potential which has a deeper van der Waals well yields elastic and inelastic cross sections that are about a factor of 5 larger than that for the newer potential at collision energies lower than 10(-3) cm(-1). |
| Starting Page | 104304 |
| Ending Page | 104304 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://physics.bk.psu.edu/pub/jcp2006.pdf |
| Alternate Webpage(s) | http://physics.bk.psu.edu/pub/erratum.pdf |
| PubMed reference number | 16542076v1 |
| Volume Number | 124 |
| Issue Number | 10 |
| Journal | The Journal of chemical physics |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Arabic numeral 0 Carbon Monoxide Energy Transfer Energy, Physics Histamine H2 Antagonists Large RLN2 gene collision |
| Content Type | Text |
| Resource Type | Article |
