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光声光谱仪是利用光声效应原理的一种新型光谱仪器,1977年在美国匹兹堡会议上首次展出了两种型号光声光谱仪,一个是Princeton应用研究公司的M6000型,另一个是Gilfort应用研究公司的R1500型,后来Princeton应用研究公司以M6001型作为商品出售。我国于1981年首先研制成功了WFJ-S型激光光声光谱仪,并应用这种仪器作了大量的应用研究工作。1979年我们同时也开展了以氙灯作光源的固体光声光谱的研制工作,GS-1型光声光谱仪就是在此基础上研制的商品仪器(图1)。 1.仪器的工作原理:仪器的工作原理是基于光声效应,光声效应的原理是:当一束以音频(f)调制的光,照射到光声池中的样品时,如样品吸收了某一波长的光,样品分子由于得到了光能就从基态被激发到
Photoacoustic spectroscopy is a new type of spectrometer that uses the principle of photoacoustic effect. Two models of photoacoustic spectrometers were first exhibited at the Pittsburgh conference in 1977 in 1977. One was the Princeton Applied Research M6000, and the other was the Gilfort Applied Research The company’s Model R1500, later Princeton Applied Research, sold the model M6001 as a commodity. China first developed in 1981 WFJ-S-type laser photoacoustic spectrometer, and the application of this instrument made a lot of applied research work. In 1979, we also carried out the development of solid photoacoustic spectroscopy using xenon lamp as a light source. The GS-1 photoacoustic spectrometer is a commercial instrument developed on this basis (Figure 1). 1. The working principle of the instrument: The working principle of the instrument is based on the photoacoustic effect. The principle of the photoacoustic effect is that when a beam of light modulated by audio (f) is irradiated on the sample in the photoacoustic cell, if the sample absorbs A wavelength of light, the sample molecules due to the light from the ground state is excited to