Application of an antenna excited high pressure microwave discharge to compact discharge lamps
Application of an antenna excited high pressure microwave discharge to compact discharge lamps
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DOI：
10.1088/0022-3727/41/14/144026
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发表时间：
2008-07
期刊：
影响因子：
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通讯作者：
M. Kando;T. Fukaya;Y. Ohishi;T. Mizojiri;Y. Morimoto;M. Shido;T. Serita
中科院分区：
文献类型：
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作者：
M. Kando;T. Fukaya;Y. Ohishi;T. Mizojiri;Y. Morimoto;M. Shido;T. Serita
研究了一种新型的高压微波放电，利用天线效应将微波能量馈入紧凑型高压放电灯的中心。这种微波放电方法被称为天线激励微波放电（AEMD）。来自固态微波发生器的约50 W的2.45 GHz微波可以在安装在紧凑型灯上的一对天线之间的小间隙中维持稳定的等离子体柱，该紧凑型灯填充有高于大气压的放电气体。AEMD已应用于紧凑型金属卤化物灯和极高压汞放电灯。结果，金属卤化物灯显示出约130 lm W-1的高发光效率。这里获得的优异的灯特性可以通过天线和灯壁处的低热损失来解释。为了考虑微波功率对灯管的影响，对灯管和微波发射器中的微波电场分布进行了数值计算。
A novel type of high pressure microwave discharge has been investigated to feed the microwave power at the centre of the compact high pressure discharge lamps using the antenna effect. This method of microwave discharge is named as the antenna excited microwave discharge (AEMD). The 2.45 GHz microwave of around 50 W from the solid state microwave generator can sustain a stable plasma column in the small gap between a couple of antennas fitted on the compact lamp filled with discharge gases at a pressure higher than atmosphere. The AEMD has been applied to a compact metal halide lamp and an extremely high pressure mercury discharge lamp. As a result, the metal halide lamp showed high luminous efficacy of around 130 lm W−1. The excellent lamp properties obtained here can be explained by the low heating loss at the antennas and the lamp wall. The profiles of the microwave electric field in the lamp and the microwave launcher have been numerically calculated to consider the microwave power supply into the lamp.