Very high efficacy electrodeless high intensity discharge lamps

Details Very high efficacy electrodeless high intensity discharge lamps Very high efficacy electrodeless high intensity discharge lamps

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985doe..repts....j&link_type=abstract

Patent Application Department of Energy, Washington, DC.

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Applications

Arc Lamps, Electrodeless Discharges, Patent Applications, Efficiency, Mercury (Metal), Rare Gases

Scientific paper

An electrodeless arc lamp comprises an outer jacket hermetically sealing and thermally protecting an arc tube inside which has an upwardly convex bottom center section. The absence of chemically reactive electrode material makes it possible to use metal halides other than iodides. The tube contains chlorides, bromides or a mixture thereof of scandium and sodium in a nearly equimolar relationship in addition to mercury and an inert gas. Good color balance can be obtained at reduced reservoir temperature and with less power loss. Reduction in wall temperature makes it possible to attain longer lamp life.

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