Communication: First observation of ground state I(2P3/2) atoms from the CH3I photodissociation in the B-band
Loading...
Official URL
Full text at PDC
Publication date
2011
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Citations
Exportar
Citation
M. G. González, J. D. Rodríguez, L. Rubio-Lago, L. Bañares; Communication: First observation of ground state I(2P3/2) atoms from the CH3I photodissociation in the B-band. J. Chem. Phys. 14 July 2011; 135 (2): 021102. https://doi.org/10.1063/1.3613656
Abstract
The photodissociation of CH3I in the second absorption band (the B-band) has been studied at the wavelength 199.11 nm, coincident with the 31 0 3R1(E) ← X˜ (1A1) CH3I vibronic transition, using a combination of slice imaging and resonance enhanced multiphoton ionization detection of the CH3 fragment. The kinetic energy and angular distributions of the recoiling CH3 fragment confirm a major predissociation dynamics channel as a result of the interaction between the bound 3R1 Rydberg state and the repulsive 3A1(E) state − ascribed to the A-band − yielding CH3 fragments in correlation with spin-orbit excited I*(2P1/2) atoms. In addition, first evidence of a non-negligible population of ground state I(2P3/2) atoms in the CH3 fragment slice images, suggests a secondary predissociation mechanism via interaction between the 3R1 Rydberg state and the repulsive A-band 1Q1 state.