Collisional energy transfer of NO D {sup 2}{Sigma}{sup +} ({nu}{prime} = 0) and A {sup 2}{Sigma}{sup +} ({nu}{prime} = 4) by O{sub 2}, N{sub 2}, Ar, and NO
Temporally and spectrally resolved fluorescence from NO D {sup 2}{Sigma}{sup +} {nu}{prime} = 0 and A {sup 2}{Sigma}{sup +} v{prime} = 4 after two-photon excitation is studied in the presence of O{sub 2}, N{sub 2}, Ar, and NO colliders at room temperature. Quenching rate constants are determined for these gases. Nitrogen is found to efficiently quench these levels, with rate constants of (2.6 {+-} 0.2) x 10{sup {minus}10} cm{sup 3} s{sup {minus}1} and (2 {+-} 0.15) x 10{sup {minus}11} cm{sup 3} s{sup {minus}1}, respectively. The large quenching rate for A {sup 2}{Sigma}{sup +} {nu}{prime} = 4 by N{sub 2} compared to those of lower vibrational levels is explained by the onset of near resonant energy transfer into the N{sub 2} A {sup 3}{Sigma}{sub u}{sup +} metastable state, similar to the path known for quenching the C {sup 2}II and D{sup 2}{Sigma}{sup +} states.
- Research Organization:
- SRI International, Menlo Park, CA (US)
- OSTI ID:
- 20023368
- Journal Information:
- Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory, Vol. 104, Issue 12; Other Information: PBD: 30 Mar 2000; ISSN 1089-5639
- Country of Publication:
- United States
- Language:
- English
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