X-ray detector unit comprises primary and secondary scintillator materials, a photo diode unit, and an optical coupling material.

摘要

An X-ray detector unit (24) comprises a primary ceramic scintillator material formed into a monolithic body (36) which takes up X-rays, and produces a corresponding amount of light, and a photo diode unit which takes up the light and produces an electrical signal. An optical coupling material is located in the gap between the photo diode and scintillator surface, in order to reduce the light refraction. A secondary scintillator material in the form of a powder is mixed with the coupling material to produce a coupling composition.