Particle number and pressure determination in high-pressure lamps
- 15 August 1986
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 60 (4) , 1263-1268
- https://doi.org/10.1063/1.337348
Abstract
An experimental setup is described which makes it possible to determine the particle number per unit length and the pressure in high-pressure mercury lamps. For this purpose the absorption of the frequency-doubled 514.5-nm line of an Ar+ laser by the mercury ground state is used. The method has been applied to measure the spatial variation of the particle number along the axial direction of a high-pressure arc and also to determine the time-dependent particle number during the warm-up and cool-down phases of a lamp. Furthermore the frequency dependence of the pressure fluctuations in a high-pressure lamp during an ac cycle has been measured for sinusoidal as well as pulsed supply voltage. The results are in agreement with calculations from a numerical model.This publication has 5 references indexed in Scilit:
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