By Topic

Optogalvanic detection of acoustic resonances in a high‐pressure sodium discharge

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options are temporarily unavailable. Please try again later.
3 Author(s)
Jongerius, M.J. ; Philips Research Laboratories, 5600 JA Eindhoven, The Netherlands ; Ras, A.J.M.J. ; Vrehen, Q.H.F.

Your organization might have access to this article on the publisher's site. To check, click on this link: 

In high‐pressure discharges, arc instabilities may occur due to acoustic resonances inside the discharge vessel. We have observed experimentally the presence of longitudinal acoustic resonances in a high‐pressure sodium discharge well below the threshold above which the arc is unstable. A dye laser, tuned to about 17 140 cm-1, proved to be able to excite the acoustic standing waves, and their galvanic effects have been measured. A local thermodynamic equilibrium discharge model is presented, which qualitatively describes the measurements. It is shown that the instability threshold is correlated to an acoustic pressure amplitude in the ventral segments of about 6 kPa.

Published in:

Journal of Applied Physics  (Volume:55 ,  Issue: 7 )