光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
7期
1978-1982
,共5页
赵友全%苗佩亮%何峰%顾建%翟瑞伟
趙友全%苗珮亮%何峰%顧建%翟瑞偉
조우전%묘패량%하봉%고건%적서위
光源%脉冲氙灯%放电过程%量子理论%实验测定
光源%脈遲氙燈%放電過程%量子理論%實驗測定
광원%맥충선등%방전과정%양자이론%실험측정
Light source%Xeon flash lamp%Discharge process%Quantum theory%Experimental determination
脉冲氙灯是一种新型光源,利用量子理论以及气体放电理论分析了脉冲氙灯放电过程,设计了放电测试系统,实验测定了放电过程中的电压、电流和光脉冲信号。结果表明:在预电离阶段自由电子浓度较低,能量较低;气体放电阶段灯内形成电子崩,使得自由电子浓度的增大,放电电流迅速上升,电压下降;离子复合时释放出光子形成光脉冲,氙灯脉冲的光能量输出和光谱特性与复合电子能量、氙气复合能级相关,而当输入能量与氙灯的能耗不一致的时候,将导致充电电容反复充放电,而使电路产生振荡。对于分析脉冲氙灯放电过程,优化放电回路参数设计和脉冲氙灯的生产具有重要意义。
脈遲氙燈是一種新型光源,利用量子理論以及氣體放電理論分析瞭脈遲氙燈放電過程,設計瞭放電測試繫統,實驗測定瞭放電過程中的電壓、電流和光脈遲信號。結果錶明:在預電離階段自由電子濃度較低,能量較低;氣體放電階段燈內形成電子崩,使得自由電子濃度的增大,放電電流迅速上升,電壓下降;離子複閤時釋放齣光子形成光脈遲,氙燈脈遲的光能量輸齣和光譜特性與複閤電子能量、氙氣複閤能級相關,而噹輸入能量與氙燈的能耗不一緻的時候,將導緻充電電容反複充放電,而使電路產生振盪。對于分析脈遲氙燈放電過程,優化放電迴路參數設計和脈遲氙燈的生產具有重要意義。
맥충선등시일충신형광원,이용양자이론이급기체방전이론분석료맥충선등방전과정,설계료방전측시계통,실험측정료방전과정중적전압、전류화광맥충신호。결과표명:재예전리계단자유전자농도교저,능량교저;기체방전계단등내형성전자붕,사득자유전자농도적증대,방전전류신속상승,전압하강;리자복합시석방출광자형성광맥충,선등맥충적광능량수출화광보특성여복합전자능량、선기복합능급상관,이당수입능량여선등적능모불일치적시후,장도치충전전용반복충방전,이사전로산생진탕。대우분석맥충선등방전과정,우화방전회로삼수설계화맥충선등적생산구유중요의의。
The Xenon flash lamp is a new type of light source for analytical instrument .The present paper analyzed the discharge process of xenon flash lamp ,presented the discharge test system ,and conducted experimental measurement of the voltage ,cur-rent and optical pulse signal in the process of discharge .The results show that in the preliminary discharge ,the free electron concentration was at a low level ,so the energy was at a low level ,then following the gas discharge ,numerous free electrons formed in the lamp ,resultin in the increase in the concentration of free electrons ,therefore discharge current rised rapidly and voltage reduced .The lamp released photons to generate light pulse in the moment of ionic recombination ,The pulse xenon lamp light energy output and spectral characteristic is related to electron energy in recombination and combination level of xenon ,if the input energy and the energy consumption of the xenon lamp is inconsistent ,it will lead to repeated capacitor charging and dis-charging and produce oscillation waveform .This paper is very useful for understanding the process of xenon lamp discharge ,op-timizing the driver circuit and the production of xenon flash lamp .