Vacuum ultraviolet radiation of a hollow-cathode discharge in a flow of inert gases

Journal Article · Thu Sep 01 04:00:00 EDT 1983 · Opt. Spectrosc. (Engl. Transl.); (United States)

OSTI ID:6761599

Gabrielyan, Y K; Nersisyan, G T; Papanyan, V O

The intensities of the VUV lines of helium, krypton, and xenon in a hollow-cathode discharge are investigated experimentally as a function of the discharge parameters when there is a longitudinal flow of gas through the hollow cathode. The hollow-cathode mode of operation is obtained for different pressures in the gas flow at lower supply voltages than in a stationary gas, which indicates that the hollow cathode is more effective in a flow. Using a collisional-radiational model, calculations of the populations of the low-lying singlet levels of helium and the intensities of the 60.1-, 53.7-, 58.4-nm lines in this discharge as a function of the current agree quite well with experimental results. Intense radiation of the 60.1-nm 2/sup 1/S--1/sup 1/S dipole-forbidden radiative transition of helium was observed, which is due to the absence of reabsorption of this line and the high density of metastable states (approx.10/sup 11/ cm/sup -3/).

• OSTI ID: 6761599
• Journal Information: Opt. Spectrosc. (Engl. Transl.); (United States), Journal Name: Opt. Spectrosc. (Engl. Transl.); (United States) Vol. 55:3; ISSN OPSUA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CATHODES
ELECTRIC DISCHARGES
ELECTRODES
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FAR ULTRAVIOLET RADIATION
FLUID FLOW
FLUIDS
FORBIDDEN TRANSITIONS
GAS FLOW
GASES
HELIUM
HOLLOW CATHODES
KRYPTON
NONMETALS
RADIATIONS
RARE GASES
ULTRAVIOLET RADIATION
XENON