Title: Investigation of Moving Striation Characteristics and Formation Mechanism of Striation Shapes in a Fluorescent Lamp
Abstract: The characteristics of the moving striation in a fluorescent lamp are investigated as a function of operating frequency, discharge current, gas species and so on. The moving striation is formed in Ar gas discharge as well as in Ar-Hg mixture gas. The interval between each ball of striation is nearly constant against operating frequency, discharge current and wall temperature of the tube. The moving manner of the striation is mainly governed by operating frequency and the stationary striation is observed at around 2 kHz. When DC bias is added to AC discharge current, the movement of striation is strongly influenced by the DC bias. Comet-like shape is observed and it moves from anode to cathode direction with velocity of 80 m/s in the case of DC operation. In the case of AC operation, a comet-like striation found in DC operation only exists and its moving direction is always from anode to cathode during AC half cycle period. Three types of the moving striation shape observed by eyes are formed by the relationship of the vibration width of the comet to the distance between adjacent striation balls.
Publication Year: 2011
Publication Date: 2011-11-01
Language: en
Type: article
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