UNIFIED ANALYSIS OF 14 DATA SETS INTERCONNECTING 12 ELECTRONIC STATES OF $As_{2}$
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Date
2001
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Ohio State University
Abstract
The entire emission spectrum of gas phase $As_{2}$ below $32,000 cm^{-1}$ excited by microwave or high voltage discharges has been measured using a high resolution Fourier-transform spectrometer (Bruker IFS 120HR) with very sensitive Ge or InSb detectors. Its analysis yielded data on fourteen electronic band systems among the twelve electronic states: $X 0^{+}_{g}(^{1}\Sigma)$, $A^{\prime}0^{-}_{u}(^{1}\Sigma^{-}_{u})$, $D 1_{g}(^{1}\Pi_{g})$, $a0^{+}_{u} (^{3}\Sigma^{-}_{u})$, $a1_{u} (^{3}\Sigma^{-}_{u})$, $c1_{u} (^{3}\Sigma^{+}_{u})$, $c0^{-}_{u} (^{3}\Sigma^{+}_{u})$, $e1_{u} (^{3}\Delta_{u})$, $e2_{u} (^{3}\Delta_{u})$, $f0^{+}_{g} (^{3}\Pi_{g})$, $f0^{-}_{g} (^{3}\Pi_{g})$ and $f1_{g} (^{3}\Pi_{g})$. Rather than analyze these band systems in a series of independent two-state analyses, we have performed a comprehensive combined analysis of all data sets simultaneously, using program $DSParFit.^{b}$ Differences between the present results and those obtained from independent two-state analyses, will be discussed.
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$^{a}$Present address: Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada $^{b}$R.J. Le Roy, University of Waterloo Chemical Physics Research Report CP-646 (2000); see also http://leroy.uwaterloo.ca.
Author Institution: Department of Chemistry, Bergische Universit\""at-Gesamthoch-schule Wuppertal; Fachbereich 9-Physikalische Chemie, University of Waterloo
Author Institution: Department of Chemistry, Bergische Universit\""at-Gesamthoch-schule Wuppertal; Fachbereich 9-Physikalische Chemie, University of Waterloo