Title:
光電陰極板及び電子管
Document Type and Number:
Japanese Patent JP4647955
Kind Code:
B2
Abstract:
Provided are a photocathode plate capable of stably achieving a high sensitive property, and an electron tube using such a photocathode plate. In a photomultiplier tube 1 , an insulating layer 63 is formed between a semiconductor electron emission layer 51 in a photocathode plate 23 A, and a first electrode 65 electrically connected to an electron releasing portion 59 . This insulating layer 63 permits the photocathode plate 23 A to be cleaned by heat cleaning at a high temperature, in a stage before formation of an active layer 61 on an exposed region of the semiconductor electron emission layer 51 in the electron releasing portion 59 . This makes it feasible to effectively clean the exposed region of the semiconductor electron emission layer 51 in the electron releasing portion 59 and to stabilize the physical properties of the exposed region. In consequence, a higher sensitive property can be stably achieved in the photocathode plate 23 A and in the photomultiplier tube 1 using the photocathode plate 23 A.
Inventors:
Tomoko Mochizuki
Minoru Arakaki
Toru Hirohata
Kuniyoshi Mori
Minoru Arakaki
Toru Hirohata
Kuniyoshi Mori
Application Number:
JP2004237661A
Publication Date:
March 09, 2011
Filing Date:
August 17, 2004
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
H01J1/34; H01J40/06; H01J43/08
Domestic Patent References:
| JP62299088A | ||||
| JP7078554A | ||||
| JP2001507498A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Hiromitsu Nakayama
Shiro Terasaki
Satoru Ishida
Hiromitsu Nakayama
Shiro Terasaki
Satoru Ishida