Coaxial liquid cooling of high power microwave excited plasma UV lamps
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsLaVerne A. Schlie, Robert D. Rathge
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Abstract
In a high power microwave excited plasma system including a microwave energy source operatively coupled to a plasma tube for generating a plasma within the tube, a gaseous medium within the tube for supporting a plasma and a reflector for focusing radiation emitted from the tube, an improved cooling system for the tube is provided which comprises a jacket surrounding the tube and defining a passageway therearound, a source of liquid dimethyl polysiloxane, and a circulator for conducting the liquid dimethyl polysiloxane through the passageway in heat exchange relationship with the tube.
Claims5
In a high power microwave excited plasma system comprising:
- (a) a source of microwave energy;
- (b) a plasma tube operatively coupled to said source of microwave energy for generation of a plasma within said plasma tube in response to energy input thereinto from said source of microwave energy;
- (c) a gaseous medium within said plasma tube for supporting a plasma therein;
- (d) reflector means for focusing radiation emitted from said plasma tube;
- and
- (e) means for cooling said plasma tube;
- an improvement wherein said means for cooling said plasma tube comprises,
- (f) a jacket surrounding said plasma tube and defining a passageway around said plasma tube within said jacket;
- (g) a source of liquid dimethyl polysiloxane;
- and
- (h) means for circulating said liquid dimethyl polysiloxane through said passageway in heat exchange relationship with said plasma tube for cooling said plasma tube.
Dependencies are inferred from the claim text.