Fast high-resolution characterization of powders using an imaging plate Guinier camera

Digitization of imaging plates from Guinier powder X-ray diffraction cameras

“…Unfortunately, upgrades of old X-ray diffraction cameras which have been developed for Ag-based chemical photography are not available. An alternative is to use such a storage-phosphor-based IP inside a 'traditional' diffraction camera and combine that with an external laser scanner, which has been used in many laboratories for decades (Gal et al, 2005). In this way it is straightforward to re-enable old Laue, Guinier or Debye-Scherrer cameras, avoiding dark-room processing of the Ag-based films.…”

“…The IP method is based on the scanning laser stimulated luminescence (Sonoda et al, 1983) of a photostimulable phosphor system such as BaFX:Eu 2+ (X = B, I) (von Seggern, 1999). Since the late 1980s, this detection method has been adopted in synchrotron (Amemiya, 1995) and conventional X-ray crystallography (Kamiya & Iwasaki, 1995), such as usage in Guinier cameras (Amemiya & Miyahara, 1988;Gal et al, 2005), and also as a radiation detector in other areas of physics (Izumi et al, 2006). The advantages of using IPs in crystallography are (i) simultaneous detection of the entire diffracted beam interval, (ii) relatively good detection linearity (Sunghwan et al, 2004), (iii) high lateral resolution down to 10 mm and (iv) a high dynamic range (Thoms, 1997) of up to six decades on commercial laser scanners.…”