Photomultiplier apparatus and radiation detector incorporating such apparatus

摘要

A radiation detection apparatus (2) is disclosed. The apparatus comprises a housing (20), a window (26) at least partially transparent to electromagnetic radiation in a first wavelength range and a photomultiplier tube (24) for generating an electrical output signal dependent on the intensity of the electromagnetic radiation. A resiliently deformable optical coupling (28) is located between the window and the photomultiplier tube for allowing at least some electromagnetic radiation passing through the window to enter the photomultiplier tube, and a scintillator element 8 converts gamma radiation into visible light in the first wavelength range entering the photomultiplier tube.