Title:
光電子増倍管
Document Type and Number:
Japanese Patent JP4708117
Kind Code:
B2
Abstract:
The present invention relates to a photomultiplier having a fine configuration capable of realizing stable detection accuracy. The photomultiplier has a housing whose inside is maintained vacuum, and a photocathode, an electron-multiplier section, and an anode are disposed in the housing. In particular, one or more control electrodes disposed in an internal space of the housing which surrounds the electron-multiplier section and the anode are electrically connected via one or more connection parts extending from an electron emission terminal of the electron-multiplier section. In this configuration, due to a voltage, instead of the applying between an electron entrance terminal and the electron emission terminal of the electron-multiplier section, being applied between the electron entrance terminal and the control electrodes, an electric potential gradient which is increased gradually from the photocathode side toward the anode side is formed in the electron-multiplier section, and a sufficient electric potential difference is provided between the electron emission terminal of the electron-multiplier section and the anode, which makes it possible to obtain stable detection accuracy.
Inventors:
Hiroyuki Hisashima
Hideki Shimoi
Hiroyuki Sugiyama
Hitoshi Kinoshita
Kimura Suenori
Yuji Masuda
Takayuki Omura
Hideki Shimoi
Hiroyuki Sugiyama
Hitoshi Kinoshita
Kimura Suenori
Yuji Masuda
Takayuki Omura
Application Number:
JP2005232488A
Publication Date:
June 22, 2011
Filing Date:
August 10, 2005
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
H01J43/06
Domestic Patent References:
| JP5234565A | ||||
| JP4359855A | ||||
| JP50022396B1 |
Foreign References:
| WO2005078759A1 | ||||
| US5568013 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Shiro Terasaki
Satoru Ishida
Shiro Terasaki
Satoru Ishida