PHOTOMULTIPLIER

摘要

A photomultiplier cuts out light reflection from each focusing piece or unuseful electrons from being emitted from photoelectronic face by forming an oxide film over the surface of each focusing piece of a focusing electrode. The oxide film is formed over the surface of each secondary electron emission piece of the first and second stage die node to cut out the reflection from each secondary electron emission piece, so that unuseful electrons by reflected light are prevented from being emitted from the photoelectron face. Further, a light absorbing glass partition is provided in a light receiving face plate to suppress crosstalks between channels.