专利详情

专利名称	Photomultiplier tube for collecting photoelectrons from a photocathode covering a whole inner surface of a vacuum container
申请号	US200913259861	专利类型	US
公开（公告）号	US8324807(B2)	公开（授权）日	2012.12.04
申请（专利权）人	中国科学院高能物理研究所	发明（设计）人	WANG YI FANGQIAN SENZHAO TIAN CHICAO JU
主分类号	H01J43/04	IPC主分类号	H01J43/04
专利有效期	Photomultiplier tube for collecting photoelectrons from a photocathode covering a whole inner surface of a vacuum container 至Photomultiplier tube for collecting photoelectrons from a photocathode covering a whole inner surface of a vacuum container	法律状态
说明书摘要	A photomultiplier tube including a photocathode, an electron multiplier, an electron collector, and a power lead, wherein the photocathode and the electron multiplier are disposed in a sealed transparent vacuum envelope, the electron collector and the power lead are connected with an external circuit outside the vacuum envelope, the photocathode is formed on the entire inner surface of the vacuum envelope, and the electron multiplier is located on the internal center of the vacuum envelope to receive photoelectrons from the photocathode in all directions for electrons multiplication. Because the effective photocathode area is increased, the detection efficiency of unit light-receiving area is improved.