Patent ID: 8324807
Filing Date: 2012-12-04
Classification: H01J

Abstract:
1. A photomultiplier tube for collecting photoelectrons from a photocathode covering a whole inner surface of a vacuum container, comprising: the photocathode for receiving light irradiation to generate the photoelectrons; an electron multiplier for receiving the photoelectrons emitted from the photocathode to generate multiplied electrons; an electron collector for collecting the multiplied electrons generated by the electron multiplier; and a power supply electrode for supplying power to the photocathode and the electron multiplier; wherein the photocathode and the electron multiplier are located within a transparent vacuum container, and the electron collector and the power supply electrode passing through the transparent vacuum container are connected to an external circuit, wherein, the photocathode covers the whole inner surface of the transparent vacuum container; and the electron multiplier is located at an internal center of the transparent vacuum container to receive the photoelectrons from the photocathode in all directions and generate the multiplied electrons.