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Low-pressure gas-discharge lamp with a mixture of alkaline earth metal - oxides as a electron emissive substance
Low-pressure gas-discharge lamp with a mixture of alkaline earth metal - oxides as a electron emissive substance
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机译:具有碱土金属-氧化物作为电子发射物质的混合物的低压气体放电灯
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摘要
A low-pressure gas discharge lamp is described, which is equipped with a gas-discharge vessel containing an inert gas filling as the buffer gas and an indium, thallium and/or copper halide, and with electrodes and with means for generating and maintaining a low-pressure gas discharge, wherein it has, as the electron emitter substance, a mixture of BaO, SrO, CaO and MgO, wherein: a) the molar proportion of BaO is less than 1 percent by weight b) the molar proportion of SrO is less than 10 percent by weight c) the sum of the molar proportions of CaO and MgO is greater than 90 percent by weight, wherein the CaO proportion in the CaO/MgO mixture lies between 10 and 90 percent by weight.
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