An infra-red spectrometer to operate over the range 8-100 micrometres

Abstract

A description is given of an evacuated path, single beam infra-red spectrometer. The optical layout, which is of the grating filter type, is describe, as is the mechanical system. The instrument measures absorption spectra over the range 1250-100 cm-l with a maximum resolution of about 0.5 cm-l.