| 简介 |
The invention provides a short-arc mercury lamp that absorbs impure gas like oxygen gas and hydrogen gas exist in a luminous tube by a getter effectively so as to emit UV with wavelength 300-350nm favorably. In the short-arc mercury lamp provided in the invention, the luminous tube (1) made of silex glass is sealed with noble gas and quick silver, and is provided with a pair of electrodes (3, 3), characterized in that : in an air-tight container (4) made of tantalum or niobium, any one of yttrium, ziroconium and vanadium (42) is sealed together with noble gas; the container (4) is mounted on anelectrode (2). Besides, the characteristics is that the noble gas sealed in the container (4) comprises at least one of argon, krypton and xenon, and pressure P (Pa) sealed in under room temperature is that p bigger than or equal to 70 (Pa). |
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