An Infrared Database System from the IRDC Cards and Its Applications

An effort has been made to convert the infrared spectral data previously published from Infrared Data Committee (IRDC) of Japan to a form accessible from a wide range of computer systems. For each absorption band, a pair of data representing its line position (in wavenumber) and intensity (in percent transmission) is extracted. These data have been assembled and stored in magnetic tapes so that they can be installed in various types of computers. The spectral search systems have also been constructed from this IRDC database. In this paper some basic structures of the converted IRDC database as well as the constructed search systems for large- to small-scale computer systems are described in some detail. The effect of intensity data upon the spectral search processes is also discussed.