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Description
Photons in Vacuum Ultra Violet spectrum are able to deposit high enough energy to bend carbon from CO2 and or allow oxygen to roam among molecule for ease of dissociation. VUV experiment relies on second VUV pulse to further ionize carbon giving more time to allow atoms to separate, UC. Davis.
Background
| Evidence for direct molecular oxygen production in CO2 photodissociation (VUV) | http://science.sciencemag.org/content/346/6205/61.full | C.Y. Ng | UC Davis | 5% yield from dual pulsed Vacuum Ultra Violet light to ionize to specific oxygen resonate states in CO2. CO2 energized to "roam" to COO and bend before ionization and dissociation. |
Dissociation Pathways
| Formula | Datum | Paper | References | ||
|---|---|---|---|---|---|
| CO2(1∑g+) → CO(1∑+) + O+(1D) | 131 nm | Albert SoIow and Yuan T. Lee J. Chem. Phys. 98 (3), 1 February 1993 | T. G. Slanger and G. Black, J. Chem. Phys. 54, 1889 (1971); 68, 1844 (1978). | ||
| CO2(1∑g+) → CO(1∑+) + O+(3P) | 147 nm | T. G. Slanger and G. Black, J. Chem. Phys. 54, 1889 (1971); 68, 1844 (1978). | |||
| O(1D) + CO2(1∑g+) → CO2(1∑g+) + O(3P) | J. C. Tully, J. Chem. Phys. 61, 61 (1974); 62, 1893 (1975). | ||||
| CO2+ → CO(1∑+) + O+(4S) | J.H.D. Eland, Int. J. Mass Spectrom. Ion Phys., 9 (1972) 397. | ||||
| CO2+ → CO+(2∑+) + O+(3P) | J.H.D. Eland, Int. J. Mass Spectrom. Ion Phys., 9 (1972) 397. | ||||
| CO2 X 2∏g | 13.778 eV | L.S. Wang, J.E. Reutt, Y.T. Lee and D.A. Shirley, J. Electron Spectry. 47 (1988) 16 | |||
| CO2 A 2∏u | 17.314 eV | ||||
| CO2 B 2∑u+ | 18.077 eV | ||||
| CO2 C 2∑g+ | 19.394 ev | https://doi.org/10.1016/0368-2048(88)85010-2 | |||
| CO2+ X 2∏g | ve (cm-1)= 1264(1), null,1470(1) spin-orbit (cm-1)= 158(4) | https://doi.org/10.1016/0368-2048(88)85010-2 | |||
| CO2+ A 2∏u | ve (cm-1)= 1126(3), 459(8), null, spin-orbit (cm-1)= 96(8) | https://doi.org/10.1016/0368-2048(88)85010-2 | |||
| CO2+ B 2∑u+ | ve (cm-1)= 1275(1), 557(4), 1840(5), spin-orbit (cm-1)= null | https://doi.org/10.1016/0368-2048(88)85010-2 | |||
| CO2+ C 2∑g+ (vibrational energies corrected for fermi resonance) | ve (cm-1)= 1353(4), 614(4), 1567(4), spin-orbit (cm-1)= null | https://doi.org/10.1016/0368-2048(88)85010-2 | |||