Title:
ELECTRON MULTIPLIER AND PHOTOMULTIPLIER
Document Type and Number:
WIPO Patent Application WO/1998/057353
Kind Code:
A1
Abstract:
An electron multiplier which cascade-multiplies incident electrons and a photomultiplier provided with the electron multiplier. The electron multiplier and the photomultiplier are each provided with a discharge suppressing structure which effectively suppresses the occurrence of noise by preventing the discharge between respective dynodes laminated in a plurality of stages. The discharge suppressing structures provides the dynodes with various structures, but, particularly for the first and second dynodes (11A and 11B) which are arranged adjacently to each other with a spacer in between, the positions of the edges (120) of the electron emitting surfaces of the first dynodes (11A) facing the second dynodes (11B) are shifted from the positions of the edges (130) of the electron entering surfaces of the second dynodes (11B) facing the first dynodes (11A) in the direction perpendicular to the direction of laminating the dynodes.
Inventors:
HASEGAWA YUTAKA (JP)
KYUSHIMA HIROYUKI (JP)
KYUSHIMA HIROYUKI (JP)
Application Number:
PCT/JP1998/002568
Publication Date:
December 17, 1998
Filing Date:
June 11, 1998
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
HASEGAWA YUTAKA (JP)
KYUSHIMA HIROYUKI (JP)
HASEGAWA YUTAKA (JP)
KYUSHIMA HIROYUKI (JP)
International Classes:
H01J43/22; (IPC1-7): H01J43/22
Foreign References:
| JPH10116582A | 1998-05-06 | |||
| JPH06314551A | 1994-11-08 | |||
| JPH0864168A | 1996-03-08 |
Attorney, Agent or Firm:
Hasegawa, Yoshiki (6F. Kyobashi National Building, 13-10,
Kyobashi 2-chom, Chuo-ku Tokyo, JP)
Download PDF: