2026-06-08T08:29:30Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/944182025-03-18T12:04:10Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Corrales Castellanos, Maria Eugenia
author
Shternin, Peter
author
Rubio Lago, Luis
author
Nalda, Rebeca de
author
Vasyutinskii, Oleg
author
Bañares Morcillo, Luis
2024-01-22T14:15:12Z
2024-01-22T14:15:12Z
2016
M. E. Corrales, P. S. Shternin, L. Rubio-Lago, R. de Nalda, O. S. Vasyutinskii, and L. Bañares The Journal of Physical Chemistry Letters 2016 7 (22), 4458-4463
DOI: 10.1021/acs.jpclett.6b01874
1948-7185
10.1021/acs.jpclett.6b01874
https://hdl.handle.net/20.500.14352/94418
https://doi.org/10.1021/acs.jpclett.6b01874
This Letter presents an experimental and theoretical study of femtosecond time-resolved vector correlations in methyl iodide (CH3I) electronic predissociation via the second absorption B-band at 201.2 nm. The time evolution of the phenomenological anisotropy parameters βl was determined from time-resolved photofragment angular distributions obtained by means of the femtosecond laser pump–probe technique coupled with velocity map imaging detection of vibrational ground-state CH3(ν = 0) fragments and spin–orbit excited I*(2P1/2) atoms. Theoretical interpretation of the experimental results was performed on the basis of a fitting procedure using quasiclassical theory, which elucidates vector correlations in photodissociation of symmetric top molecules. The results of the fitting are in very good agreement with the experimental data and demonstrate the important role of molecular excited-state lifetimes, parent molecule and methyl fragment rotations, and methyl fragment angular momentum alignment on the time-dependent electronic predissociation dynamics.
eng
Attribution-NoDerivatives 4.0 International
Femtosecond Time-Resolved Photofragment Rotational Angular Momentum Alignment in Electronic Predissociation Dynamics
journal article
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Femtosecond_Time-Resolved_Photofragment.pdf.txt