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Title: Interaction potential energies and quasi-continuum vacuum UV emission of rare-gas - alkali ionic excimers

Abstract

An ab initio calculation of the potential energies was made for the electronic states of ionic excimer molecules consisting of rare gases (Rg = Ne, Ar, Kr and Xe) and alkali metals (A = K and Rb). The calculation included the ground 1{sup 1}{Sigma}{sup +} states and the first excited singlet 2{sup 1}{Sigma}{sup +}, which correspond to the Rg({sup 1}S) + A{sup +}({sup 1}S) and Rg{sup +}({sup 2}P) + A({sup 2}S) separate limits, respectively. The calculated results predict that the emission based on transitions from the 2{sup 1}{Sigma}{sup +}({nu}'=0) states to the higher {nu}'' levels of the 1{sup 1}{Sigma}{sup +} states is characterised by the highest relative transition probabilities, which are promising for lasing in the vacuum and extreme ultraviolet (VUV/XUV) spectral ranges. Moreover, bound - free VUV emission bands were observed for electron-beam-pumped gas mixtures of Xe or Kr with a hot Rb or Cs alkali vapour. The observed four emission bands were assigned to the 2{sup 1}{Sigma}{sup +} {yields}1{sup 1}{Sigma}{sup +} transitions in the rare-gas - alkali ionic excimers Xe{sup +}Rb, Kr{sup +}Rb, Xe{sup +}Cs, and Kr{sup +}Cs, respectively. (laser applications and other topics in quantum electronics)

Authors:
;  [1];  [2]
  1. Institute of Laser Life Science, South China Normal University, Guangzhou (China)
  2. Institute for Laser Science, University of Electro-communications, Tokyo (Japan)
Publication Date:
OSTI Identifier:
21439495
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 29; Journal Issue: 12; Other Information: DOI: 10.1070/QE1999v029n12ABEH001636; Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ALKALI METALS; ELECTRON BEAM PUMPING; ELECTRON BEAMS; EMISSION; EXTREME ULTRAVIOLET RADIATION; FAR ULTRAVIOLET RADIATION; KRYPTON IONS; MOLECULES; POTENTIAL ENERGY; PROBABILITY; RARE GASES; XENON IONS; BEAMS; CHARGED PARTICLES; ELECTRICAL PUMPING; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY; FLUIDS; GASES; IONS; LEPTON BEAMS; METALS; NONMETALS; PARTICLE BEAMS; PUMPING; RADIATIONS; ULTRAVIOLET RADIATION

Citation Formats

Xing, Da, Tan, S, and Ueda, Ken-ichi. Interaction potential energies and quasi-continuum vacuum UV emission of rare-gas - alkali ionic excimers. United States: N. p., 1999. Web. doi:10.1070/QE1999V029N12ABEH001636.
Xing, Da, Tan, S, & Ueda, Ken-ichi. Interaction potential energies and quasi-continuum vacuum UV emission of rare-gas - alkali ionic excimers. United States. doi:10.1070/QE1999V029N12ABEH001636.
Xing, Da, Tan, S, and Ueda, Ken-ichi. Fri . "Interaction potential energies and quasi-continuum vacuum UV emission of rare-gas - alkali ionic excimers". United States. doi:10.1070/QE1999V029N12ABEH001636.
@article{osti_21439495,
title = {Interaction potential energies and quasi-continuum vacuum UV emission of rare-gas - alkali ionic excimers},
author = {Xing, Da and Tan, S and Ueda, Ken-ichi},
abstractNote = {An ab initio calculation of the potential energies was made for the electronic states of ionic excimer molecules consisting of rare gases (Rg = Ne, Ar, Kr and Xe) and alkali metals (A = K and Rb). The calculation included the ground 1{sup 1}{Sigma}{sup +} states and the first excited singlet 2{sup 1}{Sigma}{sup +}, which correspond to the Rg({sup 1}S) + A{sup +}({sup 1}S) and Rg{sup +}({sup 2}P) + A({sup 2}S) separate limits, respectively. The calculated results predict that the emission based on transitions from the 2{sup 1}{Sigma}{sup +}({nu}'=0) states to the higher {nu}'' levels of the 1{sup 1}{Sigma}{sup +} states is characterised by the highest relative transition probabilities, which are promising for lasing in the vacuum and extreme ultraviolet (VUV/XUV) spectral ranges. Moreover, bound - free VUV emission bands were observed for electron-beam-pumped gas mixtures of Xe or Kr with a hot Rb or Cs alkali vapour. The observed four emission bands were assigned to the 2{sup 1}{Sigma}{sup +} {yields}1{sup 1}{Sigma}{sup +} transitions in the rare-gas - alkali ionic excimers Xe{sup +}Rb, Kr{sup +}Rb, Xe{sup +}Cs, and Kr{sup +}Cs, respectively. (laser applications and other topics in quantum electronics)},
doi = {10.1070/QE1999V029N12ABEH001636},
journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 12,
volume = 29,
place = {United States},
year = {1999},
month = {12}
}