Nuclear motion captured by the slow electron velocity imaging technique in the tunnelling predissociation of the S(1) methylamine

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Predissociation dynamics of methylamines (CH3NH2 and CH3ND2) on the first electronically excited states are studied using the slow-electron velocity imaging method to unravel the multi-dimensional nature of the N-H(D) chemical bond dissociation reaction which occurs via tunnelling. The nearly free internal rotation around the C-N bond axis is found to be strongly coupled to the reaction pathway, revealing nuclear motions actively involved in the tunnelling process on the S-1 potential energy surfaces. The vibrational state-resolved energy and angular distributions of photoelectron, ejected from the ionization mediated by the metastable intermediate S-1 state provide a unique way for mapping the predissociative potential energy surfaces. (C) 2012 American Institute of Physics. [doi:10.1063/1.3675566]
Publisher
AMER INST PHYSICS
Issue Date
2012-01
Language
English
Article Type
Article
Keywords

INTRAMOLECULAR ORBITAL ALIGNMENT; PHOTOELECTRON-SPECTROSCOPY; VIBRATIONAL-STRUCTURES; (A)OVER-TILDE STATES; DYNAMICS; PHOTODISSOCIATION; CH3NH2; CD3I; CH3I

Citation

JOURNAL OF CHEMICAL PHYSICS, v.136, no.2

ISSN
0021-9606
DOI
10.1063/1.3675566
URI
http://hdl.handle.net/10203/98154
Appears in Collection
CH-Journal Papers(저널논문)
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