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In 50Hz AC operated fluorescent lamps, cold spot temperature of the lamp tube decides mercury vapor pressure; thus decides almost all the discharge parameters such as electric field, electron temperature, electron density etc. In the experiment of Liu and Zissis, the lamp tube is partially cooled by cooling spray. Discharge parameters of this cooled part deviates from their initial values. However...
Fluorescent lamps operated on low frequency AC (50 Hz or 60 Hz) might present striated instability especially when ambient temperature is low. Experimental results reveal that moving striations are not due to the disturbances in the electrode region; rather, they have a very close relation with cold spot temperature of the tube. When a non-striated tube is partially cooled by a cooling spray, moving...
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