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Title: Production of rare gas-halide excimers following trimer absorption at ultraviolet wavelengths

Abstract

Absorption by the rare gas-halide trimers Kr{sub 2}F(4{sup 2}{Gamma}) and Xe{sub 2}Cl(4{sup 2}{Gamma}) has been shown to result in the immediate formation of the respective excimer, KrF(B,C) or XeCl(B,C), and the branching ratio for this process has been measured at several ultraviolet wavelengths. In experiments using excimer lasers as both pump and probe, the branching ratio for both trimers has been found to be 0.9 {plus minus} 0.1 for wavelengths above 300 nm and approximately zero at wavelengths shorter than 250 nm. These results suggest that the trimers have strongly repulsive potential energy curves that terminate on the excimer levels. This is not predicted by theoretical modeling and demonstrates the need for improvement in the theoretical understanding of the trimers and perhaps even the excimers.

Authors:
 [1]
  1. Los Alamos National Laboratory, NM (USA)
Publication Date:
OSTI Identifier:
6102642
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry; (USA)
Additional Journal Information:
Journal Volume: 94:26; Journal ID: ISSN 0022-3654
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BORON COMPOUNDS; FLUORESCENCE SPECTROSCOPY; OPTICAL PUMPING; CARBON COMPOUNDS; KRYPTON FLUORIDES; XENON CHLORIDES; BRANCHING RATIO; EXCIMER LASERS; EXPERIMENTAL DATA; MEASURING METHODS; ULTRAVIOLET RADIATION; CHLORIDES; CHLORINE COMPOUNDS; DATA; ELECTROMAGNETIC RADIATION; EMISSION SPECTROSCOPY; FLUORIDES; FLUORINE COMPOUNDS; GAS LASERS; HALIDES; HALOGEN COMPOUNDS; INFORMATION; KRYPTON COMPOUNDS; LASERS; NUMERICAL DATA; PUMPING; RADIATIONS; RARE GAS COMPOUNDS; SPECTROSCOPY; XENON COMPOUNDS; 426002* - Engineering- Lasers & Masers- (1990-); 700208 - Fusion Power Plant Technology- Inertial Confinement Technology

Citation Formats

McCown, A W. Production of rare gas-halide excimers following trimer absorption at ultraviolet wavelengths. United States: N. p., 1990. Web. doi:10.1021/j100389a012.
McCown, A W. Production of rare gas-halide excimers following trimer absorption at ultraviolet wavelengths. United States. doi:10.1021/j100389a012.
McCown, A W. Thu . "Production of rare gas-halide excimers following trimer absorption at ultraviolet wavelengths". United States. doi:10.1021/j100389a012.
@article{osti_6102642,
title = {Production of rare gas-halide excimers following trimer absorption at ultraviolet wavelengths},
author = {McCown, A W},
abstractNote = {Absorption by the rare gas-halide trimers Kr{sub 2}F(4{sup 2}{Gamma}) and Xe{sub 2}Cl(4{sup 2}{Gamma}) has been shown to result in the immediate formation of the respective excimer, KrF(B,C) or XeCl(B,C), and the branching ratio for this process has been measured at several ultraviolet wavelengths. In experiments using excimer lasers as both pump and probe, the branching ratio for both trimers has been found to be 0.9 {plus minus} 0.1 for wavelengths above 300 nm and approximately zero at wavelengths shorter than 250 nm. These results suggest that the trimers have strongly repulsive potential energy curves that terminate on the excimer levels. This is not predicted by theoretical modeling and demonstrates the need for improvement in the theoretical understanding of the trimers and perhaps even the excimers.},
doi = {10.1021/j100389a012},
journal = {Journal of Physical Chemistry; (USA)},
issn = {0022-3654},
number = ,
volume = 94:26,
place = {United States},
year = {1990},
month = {12}
}