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.

Formation of low pressure striations in a krypton lamp, experimental characterization of the discharge: Spectroscopic and electrical analysis

“…Excimer lamps are good candidates to replace previous mercury-based lamps [3]. The UV produced by excimer lamps are also very important, recent study from Bernner's team report that far-UVC light kills pathogens in the air before we can breathe them in.…”