Ceramics-Silikáty 37, (3) 127 - 135 (1993)

Programme system RIFRAN is designed for automatic identification of polycrystalline substances by the qualitative X-ray powder diffraction phase analysis. For this purpose the database containing approximately 29 000 standards is used. This database can arbitrarily be completed and edited. The gist of identification consist in comparison of the peaks of a measured unknown substance with the peaks of standards. This identification is refined by using statistical criteria and knowledge of chemical (elemental) composition of the analysed substance. The results of identification are presented in alpha-numerical or graphic form on display, joined printer or are written in data field. The programme is written in Borland Turbo C++ computer language. The system is implemented with a personal computer of class IBM PC/AT working under operating system MS DOS. The authors are willing to give information about further development of the system and possibilities of its acquisition or advise how to gain an demoversion of the programme.