Abstract

Imaging Plates (IP) are recently developed sensitive integrating imaging detectors based on the effect of photo-stimulated luminescence (PSL). Various types of IPs sensitive for X- and gamma rays , electrons and other heavier charged particles as well as for neutrons are commercially available. The imaging system consists of a flexible large area (e.g.25cm by 40cm) IP, laser based scanning image reading unit image processor and image printer. The imaging characteristics of the IP system are broad linear response and dynamic range, excellent spatial resolution comparable to X-ray films, very high detective quantum efficiency, very small image distortions and the reusability of IP. The first IP detector systems were intended for medical diagnostics and applications in medical autoradiography and in electron and X-ray diffraction studies. However, recently developed IP systems enable excellent applications of IP also in the field of NDT, in particular in neutron radiography and in X- and gamma ray radiography. In the paper the principles and characteristics of the IP systems are summarized . Various application possibilities of IPs in radiography with neutrons, X-rays and electrons are described. Applications of IP in autoradiography, dosimetry and radiological protection are considered.

Keywords: Photostimulated Luminescence (PSL), Imaging Plate. Neutron Radiography, X-Ray Radiography Electron Radiography, Autoradiography, Radioisotopes, Natural Radioactivity, Dosimetry, Radiological Protection, Decontamination

Source: Conference Proceedings of the 4th International Conference of the Slovenian Society for Nondestructive Testing, 24 - 25 April 1997, Ljubljana, Slovenia.
Pages:137 - 150

Publisher:
Slovenian Society for Nondestructive Testing, Faculty of Mechanical Engineering, Askerceva 6, SLO 1000 Ljubljana, Slovenia. Tel +386 61 177 12 03, Fax +386 61 218 567, Email: janez.grum@fs.uni-lj.si.