Photodissociation dynamics of N{sub 2}O at 130 nm: The N{sub 2}(A {sup 3}{sigma}{sub u}{sup +},B {sup 3}{pi}{sub g})+O({sup 3}P{sub J=2,1,0}) channels
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853 (United States)
Oxygen Rydberg time-of-flight spectroscopy was used to study the vacuum ultraviolet photodissociation dynamics of N{sub 2}O near 130 nm. The O({sup 3}P{sub J}) products were tagged by excitation to high-n Rydberg levels and subsequently field ionized at a detector. In agreement with previous work, we find that O({sup 3}P{sub J}) formation following excitation to the repulsive N{sub 2}O D({sup 1}{sigma}{sup +}) state produces the first two electronically excited states of the N{sub 2} counterfragment, N{sub 2}(A {sup 3}{sigma}{sub u}{sup +}) and N{sub 2}(B {sup 3}{pi}{sub g}). The O({sup 3}P{sub J}) translational energy distribution reveals that the overall branching ratio between N{sub 2}(A {sup 3}{sigma}{sub u}{sup +}) and N{sub 2}(B {sup 3}{pi}{sub g}) formation is approximately 1.0:1.0 for J=1 and 2, with slightly less N{sub 2}(B {sup 3}{pi}{sub g}) produced in coincidence with O({sup 3}P{sub 0}). The angular distributions were found to be independent of J and highly anisotropic, with {beta}=1.5{+-}0.2.
- OSTI ID:
- 20722180
- Journal Information:
- Journal of Chemical Physics, Vol. 122, Issue 17; Other Information: DOI: 10.1063/1.1888578; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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