NO v–j vector correlations in the photodissociation of 2‐chloro‐2‐nitrosopropane

Autor:	Radoslaw Uberna, Joseph I. Cline
Rok vydání:	1995
Předmět:	Angular momentum Chemistry Ionization Photodissociation General Physics and Astronomy Rectangular potential barrier Physical and Theoretical Chemistry Atomic physics Molecular beam Excitation Surface states Reaction coordinate
Zdroj:	The Journal of Chemical Physics. 102:4705-4708
ISSN:	1089-7690 0021-9606
Popis:	The correlation between the velocity and angular momentum vectors of the NO X 2ΠΩ=1/2,3/2(v=0) fragment from the photodissociation of 2‐chloro‐2‐nitrosopropane, CH3CCl(NO)CH3, following excitation to the S1A 1A‘ electronic surface is measured. The experiments are performed in a molecular beam and a scheme for detecting NO by polarized 1+1’ resonance‐enhanced multiphoton ionization and pulsed‐extraction time‐of‐flight mass spectrometry is described. The vector correlation is a function of the NO rotational state j, and the bipolar moment describing the correlation has a maximum value of β00(22)=−0.13(±0.01) at j≊18.5–22.5, indicating a preferred perpendicular orientation of the NO angular momentum and velocity vectors. The correlation diminishes as j decreases. This result is consistent with impulsive dissociation from a barrier along the reaction coordinate on the T1a 3A‘ surface, previously postulated to produce the highest angular momentum states of NO.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c2340f3b0240b0129db4884f5d33f0a8 https://doi.org/10.1063/1.469519 Zobrazit plný text záznamu