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Author Borghesani, A.F. ♦ Carugno, G.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2008
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics
Subject Keyword Atomic measurements ♦ Scattering ♦ Gases ♦ Argon ♦ Physics ♦ Fluorescence ♦ Luminescence
Abstract We observed the infrared emission spectrum of $Xe_{2}$ excimers produced by bombarding pure Xe gas and a Ar-Xe mixture with 70 keV electrons. The spectrum is a continuum centered around 7800 $cm^{-1}$ of width 900 $cm^{-1}.$ A Franck-Condon analysis of its shape at low pressure (P=0.1 MPa) has allowed to infer that the emission is due to a bound-free transition between $0_{u}$ $^{+}$ and $0_{g}$ $^{+}$ molecular states correlated with 6p and 6s atomic limit, respectively. The spectrum shows a strong redshift and broadening as pressure is increased up to 3.3 MPa. The shift is explained in terms of dielectric screening and quantum multiple scattering. The different broadening in the pure gas and in the mixture is believed to be a manifestation of the quantum indistinguishability of identical particles.
Description Author affiliation: Dept. of Phys., Univ. of Padua, Padua (Borghesani, A.F.)
ISBN 9781424415854
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-06-30
Publisher Place France
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 282.46 kB
Page Count 4
Starting Page 1
Ending Page 4

Source: IEEE Xplore Digital Library