Radiation Detection and Imaging 3.1 RADIAT ION IMAGING – ADVANCED IMAGING WITH X-RAYS AND NEUTRONS

Radiation detection/imaging is the key to understanding the basic mechanism underlying several physical phenomena. X-rays have been used for imaging and detection for over a century starting with medical X-ray imaging to X-ray diffraction, tomography to the recent physical techniques such as EXFAS, X-ray holography. The detectors for X-rays have evolved from film to imaging plate, CCD and flat panel detectors. With the discovery of neutrons, new techniques were developed to detect and use them as imaging tool. New detectors for neutrons are required for ever-increasing application in the field of nuclear, defence and space industry. Applications are not only limited to detecting the intensities of such sources but also to determine their phase. This chapter deals with such new radiation detectors and imaging systems being developed at BARC. 3 . R A D I A T I O N D E T E C T I O N A N D I M A G I N G