Optical stark spectroscopy of the D1Π-X1Σ +(0,0) band of scandium monohydride

Anh Le, Timothy Steimle

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5 Scopus citations

Abstract

The laser induced fluorescence (LIF) spectra of the D1Π- X1Σ+(0,0) band of a rotationally cold (<20 K) molecular beam sample of scandium monohydride, ScH, and scandium monodeuteride, ScD, were recorded without and in the presence of a static electric field. The fine and magnetic hyperfine parameters for the X1Σ +(v=0) and D1Π(v=0) states of ScH and ScD were determined from the analysis of the field-free spectra. An unexpected isotopic dependence of the 45Sc(I=7/2) magnetic hyperfine interaction was observed. The lowest J-levels of the D1Π(v=0) state of ScH are not perturbed, but the corresponding levels for ScD are strongly perturbed. The observed electric field induced splitting, broadenings, and shifts were analyzed to produce permanent electric dipole moments, μe, of 1.74 ± 0.15 and 2.177 ± 0.006 D for the X1Σ +(v=0) and D1Π(v=0) states, respectively. The trend in μ e for the 3d-metal monohydrides is discussed.

Original languageEnglish (US)
Pages (from-to)9370-9376
Number of pages7
JournalJournal of Physical Chemistry A
Volume115
Issue number34
DOIs
StatePublished - Sep 1 2011

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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