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Sorption of Argon by Glass in a Gas‐Discharge Lamp
Author(s) -
BURGGRAAF A. J.
Publication year - 1966
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1966.tb15415.x
Subject(s) - argon , neon , absorption (acoustics) , electric discharge in gases , analytical chemistry (journal) , sorption , diffusion , materials science , desorption , glass tube , glow discharge , chemistry , plasma , tube (container) , adsorption , composite material , thermodynamics , chromatography , organic chemistry , physics , quantum mechanics , electrical engineering , engineering
The kinetics of the absorption of argon from a mixture of argon and neon by glass in a gas‐discharge lamp were investigated with a mass spectrometer and by measurement of the intensity of certain lines in the mission spectrum of the gas mixture. The magnitude of the cleanup (sorption) after a certain time is a function not only of the dimensions of the gas‐discharge tube, the filling pressure, the composition of the filling gas, and the discharge current but also of the temperature, type, and surface state of the glass. The results can be explained by assuming that three processes participate simultaneously in the disappearance of the argon: (1) absorption of argon ions as a result of electric discharge, (2) thermal desorption from a very thin layer at the surface of the glass, and (3) diffusion of argon ions from this thin layer into the body of the glass. Under the conditions of the investigation, neon is not absorbed appreciably. The cleanup of argon can be reduced by surface treatment of the glass.