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Proceedings Paper

Rotational state-selective photofragmentation of CD3I at 266 nm: determination of the transition dipole matrix
Author(s): L. C. Pipes; Dae Young Kim; N. R. Brandstater; Delroy Alphonso Baugh
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Paper Abstract

The photofragmentation of rovibrational energy-level selected and magnetic-state polarized (X1A1) CD3I was performed at 266 nm. The relative NK) rotational energy-level populations and the angular momentum polarization of the vibrationless (X2A2') CD3 photofragment were measured by (2 + 1) resonance-enhanced multiphoton ionization. The magnitude and relative phase of the transition dipole matrix (or T-matrix) were determined by relating the initial system (CD3I plus photon) alignment to the experimentally measured alignment for the CD3 fragment. This is believed to be the first reported measurement of the T-matrix elements for a chemical reaction. This is significant since the transition dipole matrix is the most fundamental observable for a photochemical reaction and as such it is the definitive quantity with which to judge the viability of various theoretical models used to describe photochemical reactions.

Paper Details

Date Published: 18 September 1995
PDF: 15 pages
Proc. SPIE 2548, Laser Techniques for State-Selected and State-to-State Chemistry III, (18 September 1995); doi: 10.1117/12.220833
Show Author Affiliations
L. C. Pipes, Univ. of California/Los Angeles (United States)
Dae Young Kim, Univ. of California/Los Angeles (United States)
N. R. Brandstater, Univ. of California/Los Angeles (United States)
Delroy Alphonso Baugh, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 2548:
Laser Techniques for State-Selected and State-to-State Chemistry III
John W. Hepburn, Editor(s)

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