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本文讨论了高压钠放电灯,其特点是钠蒸汽压力大于5千帕,功率密度约100瓦厘米~(-3)。在高压钠灯很短的历史中,用作放电管材料的抗钠半透明氧化铝在五十年代末才发明,持续的研究和试制,终于对放电的物理机制有了深入的了解,同时也改进了灯的性能。本文讨论了各种物理现象,如等离子体温度、发射光谱以及能量平衡。对放电管的设计、放电管的材料和封接等技术问题以及灯的启动和稳定也作了讨论。高压钠灯是一种体积较小的光源,光色金白、光效高达140流明瓦~(-1)。高压钠灯业已得到广泛应用,主要用于室外照明。
This article discusses the high-pressure sodium discharge lamps, which are characterized by a sodium vapor pressure greater than 5 kPa and a power density of about 100 watts cm -3. In the very short history of high-pressure sodium lamps, the sodium-resistant translucent alumina used as the discharge tube material was not invented in the late 1950s. After continuous research and trial production, the physical mechanism of discharge was finally well understood and improved The performance of the lamp. This article discusses various physical phenomena such as plasma temperature, emission spectra, and energy balance. The design of the discharge tube, discharge tube material and sealing and other technical issues as well as the start-up and stability of the lamp are also discussed. High-pressure sodium lamp is a smaller light source, light color gold and white, light efficiency up to 140 lumens watts ~ (-1). HPS has been widely used, mainly for outdoor lighting.