Energy transfer studies in krypton-xenon mixtures excited in a cooled DC discharge

Citation
B. Krylov et al., Energy transfer studies in krypton-xenon mixtures excited in a cooled DC discharge, EUR PHY J D, 8(2), 2000, pp. 227-239
Citations number
37
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL D
ISSN journal
1434-6060 → ACNP
Volume
8
Issue
2
Year of publication
2000
Pages
227 - 239
Database
ISI
SICI code
1434-6060(200002)8:2<227:ETSIKM>2.0.ZU;2-T
Abstract
The VUV spectrum of gaseous mixtures of krypton with a small amount of xeno n added was investigated in the range 115-200 nm. The mixtures were excited in a capillary DC discharge where the capillary could be cooled by using l iquid nitrogen. The mixed molecule band around the Xe I resonance line at l ambda = 147 nm and the mixed molecule continuum to the long wavelength side from the line were analysed. The band around lambda = 147 nm was identifie d as transitions between a weakly bound excited state and the weakly bound ground state of XeKr molecules. When cooling the capillary wall, the appear ance of the Xe-2 continuum was observed. The effect is ascribed to energy t ransfer between molecular states as a consequence of radiation trapping in the band around lambda = 147 nm. The role of the mixed molecule in the form ation of the VUV spectrum of the gas mixture is discussed and underlined.