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.
KeywordsMagnesium Hydrated Mercury Silicate Tungsten
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- 1).J.P. Keene “Some practical aspects of kinetic spectrophotometry in pulse radiolysis” Quaderni dell’area di ricerca dell’Emilia e Romagna n° 1 C.N.R. Bologna 1972 Italy.Google Scholar
- 2).Melles-Griot “Optics Guide” 1975 Arnhem, Holland.Google Scholar
- 3).VARIAN Associates “product bulletin”.Google Scholar
- 4).Hutton, Roffi, Martelli “Experimental apparatus at the Bologna linac” Quaderni dell’area della ricerca dell’Emilia e Romagna n° 5 C.N.R. Bologna 1975 Italy.Google Scholar
- 5).Bausch & Lomb “Diffraction grating handbook” Rochester, New York.Google Scholar
- 6).RCA “Photomultiplier manual” PT-61. Harrison N.J.Google Scholar
- 7).Rofin Laser & Instruments “Germanium photodiode” data sheet Egham, Surrey.Google Scholar
- 8).EG & G “Silicon photodiodes application notes” D 3000 C-l SALEM, MASS.Google Scholar