A Catalog of XRF-Escape Peaks from Radiation Detectors Compounds for Nuclear Molecular Medicine and Gamma-Ray Spectrometry

A catalog of values of predicted energies of the K-XRF escape-peaks from compounds, used for radiation detectors, is presented for given incident gamma-rays suited for nuclear molecular medicine and low-energy spectrometry. The information relating to the compounds adds to that relating to the individual natural elements recently posted [RSC2025a]. The results of powerfunctions best-fit of XRF energy values vs. Z are listed in Table 1 for Kα2 orbital and Kedge. These expressions, allow simple calculations, avoiding the development of complex software. An extensive literature survey has been carried out mainly considering text-books, review articles and research reports. A final number compounds (Nc) equal to 729 has been obtained, whose distribution per number of constituting elements (Ne) is reported in Table 2. The predicted energy peaks are arranged in Tables 3 to 7 per Ne in the range from 2 to 8, showing the average value of 3.92 elements per compound. The catalog is conceived for nuclear molecular medicine and gamma-ray spectrometry where such peaks need to be recognized and their underlying area known in order to allow quantitative information.