INITIAL INTER-LABORATORY TESTING OF THE ROSSENDORF-OXFORD (ROX97) SECONDARY STANDARD FOR X-RAY-ANALYSIS

(ROX97 Rossendorf-Oxford, version 1997), the new paper-based secondary standard for storing, reproducing and comparing relative X-ray effici ency curves, has been distributed to different analytical laboratories for initial tests. Several standard X-ray techniques as PIXE. XRF and EDX have been involved. Quantitative inter-laboratory comparisons are presented for PIXE facilities operating in-vacuum as Hell as on exter nal proton beams. In the case of XRF and EDX, typical spectra taken fr om the standard are compared in the context of the individual experime ntal conditions. Regarding both the different sources of X-ray excitat ion and X-ray detection units the advantages and limits of ROX97 are d iscussed to deduce information on required upgrading improvements. (C) 1998 Elsevier Science B.V.