Patent ID: 6627897
Filing Date: 2003-09-30
Classification: G01T

Abstract:
An apparatus for detection of ionizing radiation comprising:a radiation entrance transparent to ionizable radiation; an ionizable substance arranged such that ionizable radiation entered through said radiation entrance can ionize said ionizable substance; an electrode arrangement connected to a voltage supply for applying an electric field in said apparatus such that electrons released during ionization of said ionizable substance are accelerated; a scintillating substance adapted to emit light in response to being struck by electrons, and arranged such that electrons accelerated by means of said electrode arrangement can strike said scintillating substance; and a position sensitive light detection arrangement for detecting light emitted in said scintillating substance spatially resolved; wherein said electrode arrangement includes a dual parallel plate arrangement; said scintillating substance is arranged in an array of separately located scintillating elements, wherein each scintillating element is separated from the other ones by means of a light impermeable wall such that light emitted in anyone of said scintillating elements is prevented from reaching any other ones of said scintillating elements; and said light detecting arrangement includes an array of light detecting elements, wherein each light detecting element is arranged to detect light emitted from a respective one of said array of separately located scintillating elements.