Spectral change mechanism in the pulsed high-pressure sodium arc
- 1 May 1979
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 50 (5) , 3207-3211
- https://doi.org/10.1063/1.326357
Abstract
The enhancement of radiative output of the pulsed high‐pressure sodium discharge in the blue region of the visible spectrum is due principally to radiation from the nd2D→3p2P transitions of the sodium atom where n=4–15. Excitation of these upper energy levels results from a transient non‐steady‐state increase in plasma temperature to about 5500 °K in the center of the arc. This temperature decays to a value near that encountered in steady‐state excitation conditions in a time comparable to the empirically optimized pulse duration and to the previously determined time for plasma temperature relaxation.This publication has 7 references indexed in Scilit:
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