测量低压汞灯254nm辐通量的Keitz方法  

Keitz Method for Measuring of 254 nm Radiant Flux in Low Pressure Mercury Lamps

作　　者：张源[1] 孙鸣华[1] 朱绍龙[1] 张善端[1] 

机构地区：[1]复旦大学电光源研究所,上海200433

出　　处：《复旦学报（自然科学版）》2010年第2期262-266,共5页Journal of Fudan University：Natural Science

基　　金：广东省与教育部产学研结合资助项目(2009B090300308)

摘　　要：介绍了测量紫外灯辐通量的2种方法.提出通过测量低压汞灯254 nm辐照度,可用Keitz公式计算出辐通量.实验测试和讨论了Keitz公式与线光源、柱光源近似的差别,证实在辐射功率计探头与灯之间的距离为灯长度的2.5～4倍的条件下,Keitz公式计算和分布辐射度计法得到的紫外辐通量的误差<1%.并测得外径16 mm,长0.8 m,功率120W的低压汞灯的254 nm辐射效率约为40%.Two methods of measuring UV radiant flux are introduced. The Keitz formula is used to calculate the 254 nm radiant flux of low pressure mercury lamp （LPM）. The difference between linear lamp approximation, eylinder lamp approximation and Keitz formulas is discussed. The results show that the Keitz method and gonic~ radiometry result in the error less than 1% for the distance between UV sensor and LPM 2. 5-4 times of the lamp length. The radiant efficiency of 254 nm line is about 40% for LPM with outer diameter 16 mm, length 0. 8 m, and power 120 W.

关 键 词：低压汞灯 辐通量 Keitz公式 分布辐射度计 254 nm辐射 

分 类 号：O482.11[理学—固体物理] TM923.321[理学—物理]