Experimental and theoretical photofragmentation dynamics of rovibronic-magnetic state-selected ND3

Elva A. Torres*, Dae Y. Kim, Leonard C. Pipes, Delroy A. Baugh, Tamar Seideman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Results of experimental and theoretical studies of the rovibrationally state-selected photodissociation dynamics of ND3 at 193.3 nm are reported. ND3 molecules in the antisymmetric inversion doublet level were state-selectively focused, using an electrostatic hexapole, into several rovibronic-magnetic states. The velocity distributions of the D atom for photofragmentation of ND3 in each of these fully selected states were measured using Doppler spectroscopy. The resulting Doppler profiles were fitted by comparison with profiles calculated using a fully quantum mechanical photofragmentation theory. At the high photon energies considered, the total photofragmentation cross-section was found to be relatively insensitive to the initial rotational energy level. Analysis of the fully state-selected differential photofragmentation cross-sections in terms of R-, Q- and P-branch scattering waves allowed the matrix elements of the transition dipole operator to be determined. These matrix elements confirm a parallel transition with the D atom recoiling primarily along the C3 axis for the photodissociation of ND3 at 193.3 nm.

Original languageEnglish (US)
Pages (from-to)931-940
Number of pages10
JournalJournal of the Chemical Society - Faraday Transactions
Volume93
Issue number5
DOIs
StatePublished - Mar 7 1997

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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