Positive columns sustained jointly by microwaves and DC voltages for lighting applications: experimental results in pure argon
Abstract
In order to improve significantly the performance of fluorescent discharges in lighting applications, the concept of hybrid positive columns, which combines a direct current DC positive-column and a microwave plasma source at the cathode surface is introduced. The feasibility of such hybrid discharges, which can operate in the 10 W power range or below, is substantiated experimentally in pure argon. A first analysis of performance in terms of energy efficiency and energy savings is reported for comparison purposes with current fluorescent lamps.
- Publication:
-
Journal of Physics D Applied Physics
- Pub Date:
- September 2019
- DOI:
- 10.1088/1361-6463/ab2d12
- Bibcode:
- 2019JPhD...52M5202P
- Keywords:
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- positive column;
- microwave plasma;
- microwave coaxial applicator;
- lighting applications