Title:
第１段ダイノード及び光電子増倍管
Document Type and Number:
Japanese Patent JP7033501
Kind Code:
B2
Abstract:
To provide a first stage dynode capable of restraining electron transit time difference and extended electron travel time in a photoelectron multiplier, and to provide a photoelectron multiplier including such a first stage dynode.SOLUTION: A first stage dynode 11 comprises a bottom wall part 111, a pair of sidewall parts 112 extending to one side from one of both ends of the bottom wall part 111 in the X axis direction, a first holding part 113 extending outward from the end of the bottom wall part 111, and a pair of second holding parts 114 extending from both ends of the pair of sidewall parts 112 in the X axis direction to one side. An electron emission surface 11a facing one electron passing opening 11b is constituted of a bottom face 111a of the bottom wall part 111, and a pair of lateral faces 112a of the pair of sidewall parts 112. The bottom face 111a is a concave face in the profile perpendicular to the X axis direction. Each of the pair of lateral faces 112a is a concave face in the profile parallel with the X axis direction.SELECTED DRAWING: Figure 3
Inventors:
Yuki Nishimura
Masahiro Otani
Takanori Ichinomiya
Masahiro Otani
Takanori Ichinomiya
Application Number:
JP2018108696A
Publication Date:
March 10, 2022
Filing Date:
June 06, 2018
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
H01J43/24
Domestic Patent References:
| JP52095159A | ||||
| JP2008098172A |
Foreign References:
| US20060164007 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Kenichi Shibayama
Yoshiki Kuroki
Kenichi Shibayama