Title:
光電子増倍管
Document Type and Number:
Japanese Patent JP4473585
Kind Code:
B2
Abstract:
A photomultiplier tube includes: a cathode 3, a plurality of dynodes 107, and a electron lens forming electrode 115. The cathode 3 emits electrons in response to incident light. The plurality of dynodes 107 multiplies electrons emitted from the cathode 3. The electron lens forming electrode 115 is disposed in a prescribed position in relation to an edge of a first dynode 107a positioned in a first stage from the cathode 3 and an edge of a second dynode 107b positioned in a second stage from the cathode 3, and smoothes an equipotential surface in a space between the first dynode 107a and the second dynode 107b along a longitudinal direction of the first dynode. This structure improves time resolution in response to incident light.
Inventors:
Takayuki Omura
Kimura Suenori
Masuho Ito
Kimura Suenori
Masuho Ito
Application Number:
JP2004003037A
Publication Date:
June 02, 2010
Filing Date:
January 08, 2004
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
H01J43/26; H01J43/06; H01J43/08; H01J43/20
Domestic Patent References:
| JP57124842A | ||||
| JP5114384A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Shiro Terasaki
Satoru Ishida
Shiro Terasaki
Satoru Ishida