A novel experimental method for in situ diagnostics of electrode workfunctions in high-pressure gas discharge lamps during operation
A novel experimental method for in situ diagnostics of electrode workfunctions in high-pressure gas discharge lamps during operation
复制标题
一种高压气体放电灯运行期间电极功函数原位诊断的新实验方法
DOI：
10.1088/0022-3727/33/23/312
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Neiger
中科院分区：
文献类型：
--
作者：
W. Schlager;M. Neiger
在这项工作中，提出了一种新的诊断方法，该方法允许在正常灯工作期间原位检测高强度放电 (HID) 灯的电极功函数。利用这种新颖的工具，可以研究 HID 灯在工作过程中的电极发射行为，例如电极表面高电场的影响。在使用专门设计的测试系统验证实验方法后，新方法应用于HID灯，其中由于不同的发射器概念而使用不同的电弧附着模式。这种新方法基于铁水表面的光电效应。利用该过程众所周知的理论描述（包括电场的存在），可以解释脉冲激光照射引起的短时电信号并确定功函数。对引起实验不确定性的影响进行了研究并可以量化。可以进行适当的修正。
In this work a new diagnostic method is presented, which allows the in situ detection of the electrode workfunction of high-intensity discharge (HID) lamps during normal lamp operation. With this novel tool it is possible to investigate the electrode emission behaviour of HID lamps during operation, which is influenced, for example, by high electric fields at the electrode surface. After verification of the experimental method using a specially designed test system, the new method is applied to HID lamps, in which different arc attachment modes, due to different emitter concepts, are used. This new method is based on the photoelectric effect at hot metal surfaces. With the well known theoretical description of this process, including the presence of electric fields, the short-time electric signals induced by pulse laser irradiation can be interpreted and the workfunction can be determined. Effects causing experimental uncertainties are investigated and can be quantified. Appropriate corrections are possible.