DEVELOPMENT AND APPLICATIONS OF A NEW IR-RADIATION HEATING IN THERMAL-DESORPTION MASS-SPECTROMETRY TDMS

An infra-red radiation heating was developed for applications in therm al desorption mass spectrometry (TDMS), avoiding disadvantages of the various types of sample heatings used so far. In a first application D -2-desorption profiles were determined from deuterium doped vanadium s amples, Thereby a linear relationship could be found between the amoun t of detected deuterium and known D-concentrations. D-2-desorption pro files from D doped Si showed 2 maxima corresponding to different desor ption processes. In another application characteristic TD mass spectra were obtained for a solvent agent of an adhesive. The further investi gation of the desorption behaviour of a specific fragment yielded a re lationship between the detected amount of this species and the adhesiv e strengths of polycarbonate foils.