Branching ratios, radiative lifetimes, and transition dipole moments for tantalum nitride, TaN

Jacob L. Bouchard, Timothy Steimle, Damian L. Kokkin, David J. Sharfi, Richard J. Mawhorter

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The dispersed laser induced fluorescence resulting from excitation in the regions of the [17.58]0+ − X1Σ+ (0, 0), [18.42]0+ − X1Σ+ (0, 0), [19.22]1 − X1Σ+ (0, 0), and [19.40]1 − X1Σ+ (0, 0) bands of tantalum nitride, 181TaN, have been recorded and analyzed. The branching ratios and radiative lifetimes for the [17.58]0+(v = 0), [18.42]0+(v = 0), [19.22]1+(v = 0), and [19.40]1(v = 0) states have been determined. From these values the transition dipole moments for visible bands are determined. Vibrational spacing in the X1Σ+ state and the spin-orbit splitting of the a3Δ state are measured and compared with predicted values. The dispersed fluorescence spectra and determined branching ratios reveal that the most effective mechanism for populating the a3Δ1(J=1,v=0) state, which will be used in future P- and T-violation measurements, is via excitation of the [18.42]0+ − X1Σ+ (0, 0) band followed by subsequent spontaneous or stimulated emission.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalJournal of molecular spectroscopy
Volume325
DOIs
StatePublished - Jul 1 2016

Keywords

  • Dispersed fluorescence
  • TaN
  • Transition dipole moments

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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