Title:
PHOTOMULTIPLIER
Document Type and Number:
WIPO Patent Application WO/2007/063678
Kind Code:
A1
Abstract:
A photomultiplier for detecting ultraviolet rays in which solar blind characteristics
are adjusted with high precision. The photomultiplier comprises a hermetically
sealed container having a window member for taking in light to be detected, and
an electron multiplying section including a photocathode and a plurality of
stages of dinode and performing cascade multiplication on photoelectrons from
the photocathode is arranged in the hermetically sealed container. The photocathode
contains AlXGa1-XN (0≤X<1). Out of the plurality
of stages of dinode, at least two continuous stages of dinode including the first
stage dinode receiving photoelectrons from the photocathode are composed of
a beryllium copper alloy substrate, respectively, and a secondary electron
emission surface containing beryllium oxide is formed on the inner wall of a plurality
of secondary electron multiplication holes provided in each beryllium copper
alloy substrate.
Inventors:
SUZUKI NOBUHARU (JP)
NAGAI TOSHIMITSU (JP)
SHIMOI HIDEKI (JP)
NAGAI TOSHIMITSU (JP)
SHIMOI HIDEKI (JP)
Application Number:
PCT/JP2006/322138
Publication Date:
June 07, 2007
Filing Date:
November 07, 2006
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
SUZUKI NOBUHARU (JP)
NAGAI TOSHIMITSU (JP)
SHIMOI HIDEKI (JP)
SUZUKI NOBUHARU (JP)
NAGAI TOSHIMITSU (JP)
SHIMOI HIDEKI (JP)
International Classes:
H01J43/08; H01J43/10; H01J43/28
Foreign References:
| JPS61224234A | 1986-10-04 | |||
| JPH10188782A | 1998-07-21 | |||
| JP2005011593A | 2005-01-13 | |||
| JPH11102659A | 1999-04-13 | |||
| JP2004200174A | 2004-07-15 |
Attorney, Agent or Firm:
HASEGAWA, Yoshiki et al. (Ginza First Bldg. 10-6, Ginza 1-chome, Chuo-k, Tokyo 61, JP)
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