Radioactive starting aids for electrodeless light sources

Details Radioactive starting aids for electrodeless light sources Radioactive starting aids for electrodeless light sources

H - Electricity

01

J

313/22

H01J 65/06 (2006.01)

Patent

CA 1133041

ABSTRACT OF THE DISCLOSURE Radioactive materials are used to assist in starting a discharge in an electrodeless light source. The radioactive emissions predispose on the inner surface of the lamp envelope loosely bound charges which thereafter assist in initiating discharge. The radioactive material can be enclosed within the lamp envelope in gaseous or non-gaseous form. Preferred materials are krypton 85 and americium 241. In addition, the radioactive material can be dispersed in the lamp envelope material or can be a pellet imbedded in the envelope material. Finally, the radioactive material can be located in the termination fixture. Sources of alpha particles, beta particles, or gamma rays are suitable. Because charges accumulate with time on the inner surface of the lamp envelope, activity levels as low as 10-8 curie are effective as starting aids.

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