A Computer-Controlled Double Beam Absorption Spectrophotometer for the Ultraviolet,Visible,and near Infrared Regions

Abstract

A PDP 8/1 computer with 8 K memory has been used to control a double beam absorption spectrophotometer for the range of 50 000 to 10 000 cm⁻¹. Details of the optical and electronic design are given, and the principles and advantages of a computer-controlled instrument are outlined. The software is described, and some spectra demonstrating the performance of the instrument are given.

Keywords

Absorption spectroscopy Computer applications Ultraviolet-visible instrumentation

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Listings of the small computer program are available upon request.