ENERGY ORDERING OF THE EXCITED STATES OF XeF
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Date
1978
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Ar/Xe/$NF_{3}$ mixtures were excited by the focused beam from an ArF (193 nm) laser. $Xe^{+}$ ions are produced by two-photon ionization, the electrons attach to make $F^{-}$, and the ions recombine to make $XeF^{*}$. Radiation is observed in the $XeF(B\frac{1}{2}) \rightarrow XeF \left(X\frac{1}{2}\right)$ bands near 351 nm and in the broader $XeF\left(C \frac{3}{2}\right) \rightarrow XeF \left(A \frac{3}{2}\right)$ band near 460 nm. At low background gas pressure, mostly B-X UV emission is observed. As the argon pressure is increased to 1000 torr, the visible/UV band intensity ratio increases to about 3-to-l, We conclude from these observations that the $C \left(\frac{3}{2}\right)$ state lies $700 \pm 70 cm^{-1}$ below the $B \left(\frac{1}{2}\right)$ state. This conclusion should have a significant impact on our understanding of the fluorescence yields and laser performance of e-beam excited XeF.
Description
This work was supported by the Department of Energy under contract No. AT(04-3)-ll5, P/A 99, and by DARPA under Contract No. DASG60-77-C-0028 through the U.S. Army BMDATC. D. Kligler has been a National Science Foundation Graduate Fellow, Stanford University.""
Author Institution: Molecular Physics Laboratory
Author Institution: Molecular Physics Laboratory