Issue 50

N. Martini et alii, Frattura ed Integrità Strutturale, 50 (2019) 471-480; DOI: 10.3221/IGF-ESIS.50.39 477 Spatial frequencies (cycles/mm) Gain transfer function (GTF) Figure 4 : Variation of the GTF with spatial frequency for the thin CaWO 4 phosphor screen. Figure 5 : Variation of the eGTF with spatial frequency for the CaWO 4 phosphor screen combined with the various optical detectors.