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本文先利用十米多程怀特型样品池,进行了室内原理模拟实验,在实际大气压力加宽和常温条件下,测定了乙烯、丙烯腈、氨、敌敌畏、甲醇等九种气体对调谐二氧化碳激光(9-11微米)各谱线的吸收系数,论述了用可调谐二氧化碳激光对乙烯进行长程差分吸收的探测方案、灵敏度以及干扰来源和排除方法。在室内实验基础上,于1978年开始研制了一台激光监测大气污染仪(试验机)。该机是一台发射、接收两用的单端系统。共分三个主要部分:第一部分主机。包括两台光栅调谐 CO_2激光器,输出谱线90条,强线功率1瓦左右,用于监测乙烯的谱线为10P(14),参考线为10P(18),主机还包括激光发射、接收望远镜及探测系统,并且可在垂直和水平两个方
In this paper, we first used a 10-meter multi-path Whitehead sample cell to simulate the indoor principle. Under the conditions of widening atmospheric pressure and room temperature, nine gases, such as ethylene, acrylonitrile, ammonia, dichlorvos and methanol, (9-11 μm), the detection scheme, sensitivity, interference sources and elimination methods for long-range differential absorption of ethylene with tunable carbon dioxide laser are discussed. Based on laboratory experiments, a laser monitoring air pollution meter (test machine) was developed in 1978. The aircraft is a launch, receive dual-use single-ended system. Is divided into three main parts: The first part of the host. Including two grating tuned CO_2 lasers, outputs 90 lines with strong line power of about 1 watt, 10P (14) line for monitoring ethylene and reference line 10P (18). The host also includes a laser emitting and receiving telescope And detection system, and can be both vertical and horizontal