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Excelitas Technologies Corp. - X-Cite Vitae LB 11/24
Photonics Dictionary

iodine cycle

A development aimed at extending the life of a tungsten filament. The iodine vapor in the lamp envelope combines with the tungsten vapor emitted by the hot filament, but the compound is decomposed by the heat and deposits the tungsten back onto the filament itself. The lamp envelope must run hot.
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