Optical Monitoring Techniques
The investigation of the properties of transient chemical species produced by means of exciting sources such as laser or electron-beam pulses, can be carried out by a variety of methods. Kinetic spectrophotometry is one very powerful method and is probably the most commonly used in this field. It is used to make quantitative measurements of optical density as a function of time and wavelength and enables absorption or emission spectra of short lived species e.g. radicals, ions, excited states to be obtained. The technique is very simple in principle but requires a carefully assembled set-up in order to provide accurate measurements. Here we briefly discuss the most important aspects of the factors required to operate such an experimental set-up.
KeywordsDark Current Xenon Lamp Pulse Radiolysis Exit Slit Angular Dispersion
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