Photodissociation dynamics of N2O at 130 nm: the N2(A 3Sigmau +,B 3Pig)+O(3PJ = 2,1,0) channels.
J Chem Phys
; 122(17): 174303, 2005 May 01.
Article
in En
| MEDLINE
| ID: mdl-15910028
ABSTRACT
Oxygen Rydberg time-of-flight spectroscopy was used to study the vacuum ultraviolet photodissociation dynamics of N(2)O near 130 nm. The O((3)P(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((3)P(J)) formation following excitation to the repulsive N(2)O D((1)Sigma(+)) state produces the first two electronically excited states of the N(2) counterfragment, N(2)(A (3)Sigma(u) (+)) and N(2)(B (3)Pi(g)). The O((3)P(J)) translational energy distribution reveals that the overall branching ratio between N(2)(A (3)Sigma(u) (+)) and N(2)(B (3)Pi(g)) formation is approximately 1.01.0 for J = 1 and 2, with slightly less N(2)(B (3)Pi(g)) produced in coincidence with O((3)P(0)). The angular distributions were found to be independent of J and highly anisotropic, with beta = 1.5+/-0.2.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oxygen
/
Photochemistry
/
Models, Molecular
/
Models, Chemical
/
Nitric Oxide
/
Nitrogen
Language:
En
Journal:
J Chem Phys
Year:
2005
Document type:
Article
Affiliation country:
United States