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Xenon short-arc lamp: Difference between revisions
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Added photo of blackening lamp
JesseCrooks (talk | contribs) (Added photo of blackening lamp) |
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==Aging== | ==Aging== | ||
[[File:Xenon lamp-blackening envelope.jpg|right|thumb|400px|An aging lamp with burnt off tungsten blackening the envelope.]] | |||
Xenon lamps have a fixed arc gap, but over time the tungsten of the cathode gets burnt off by the plasma, increasing the distance between the electrodes and reducing the light emitted at a given power draw. Burnt off tungsten can also deposit on the envelope, creating black spots and accelerating the effects of aging. | Xenon lamps have a fixed arc gap, but over time the tungsten of the cathode gets burnt off by the plasma, increasing the distance between the electrodes and reducing the light emitted at a given power draw. Burnt off tungsten can also deposit on the envelope, creating black spots and accelerating the effects of aging. | ||