Progress in Photomultiplier Tubes, Scintillation Instruments and Image Intensifiers

This paper reviews recent work at E.M.I. on photomultiplier tubes for tritium counting and for other specialised purposes, including short resolving time applications. Data on spread of parameters for production tubes of various types are also given. Details of health physics instruments, based on scintillation techniques, briefly outlined and a new tube designed for these, is described. Work on image intensifiers is also in progress.