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Microchannel plate, gas proportional counter and imaging device

外国特許コード F110005370
整理番号 K01806WO
掲載日 2011年9月5日
出願国 アメリカ合衆国
出願番号 98953706
公報番号 20110155919
公報番号 8134129
出願日 平成18年7月28日(2006.7.28)
公報発行日 平成23年6月30日(2011.6.30)
公報発行日 平成24年3月13日(2012.3.13)
国際出願番号 JP2006315062
国際公開番号 WO2007013630
国際出願日 平成18年7月28日(2006.7.28)
国際公開日 平成19年2月1日(2007.2.1)
優先権データ
  • 特願2005-221722 (2005.7.29) JP
  • 2006WO-JP315062 (2006.7.28) WO
発明の名称 (英語) Microchannel plate, gas proportional counter and imaging device
発明の概要(英語) (US8134129)
An object of the present invention is to provide a microchannel plate having excellent characteristics which enable to attain both high luminance and high resolution at the same time, a gas proportional counter using such a microchannel plate and an imaging device.
The microchannel plate according to the present invention comprises a base body provided with a plurality of through holes (13) and having an insulating property, and is arranged in a gas atmosphere mainly containing an inert gas to constitute a proportional counter.
The base body has photoelectric converter portions (1a, 1b) formed on at least inner walls of the plurality of through holes (13).
特許請求の範囲(英語) [claim1]
1. A microchannel plate which comprises a base body provided with a plurality of through holes and having an insulating property, wherein the base body has a first photoelectric converter portion formed on at least inner walls of the plurality of through holes on one end side, and a second photoelectric converter portion formed on the inner walls of the plurality of through holes on the other end side and arranged apart from the first photoelectric converter portion, and
the first and second photoelectric converter portions are configured to also serve as electrodes to apply a predetermined voltage to opposite ends of the through holes.
[claim2]
2. The microchannel plate according to claim 1, wherein the first and second photoelectric converter portions include alkali metal atoms.
[claim3]
3. The microchannel plate according to claim 2, wherein the first and second photoelectric converter portions satisfy a relation represented by the following formula (I):
Lcp * 0.1<La (1),
in which Lcp: a length of each through hole in an axial direction, and La: a length of the first and second photoelectric converter portions along the axial direction of the through hole.
[claim4]
4. The microchannel plate according to claim 1, wherein the first and second photoelectric converter portions include a plurality of types of alkali metal atoms.
[claim5]
5. The microchannel plate according to claim 1, wherein sections of the inner walls of the plurality of through holes have a substantially linear shape which is vertical to a plane direction of the base body.
[claim6]
6. A gas proportional counter which comprises: a chamber filled with a gas for radiation detection mainly including an inert gas and having a window which an electromagnetic wave or ionization radiation enters, and
the MCP arranged in the chamber according to claim 1.
[claim7]
7. The gas proportional counter according to claim 6, wherein the gas for radiation detection contains an organic gas including a halogen atom in molecules.
[claim8]
8. An imaging device which comprises: the gas proportional counter according to claim 6, and
a photo-detector arranged after the chamber.
  • 発明者/出願人(英語)
  • TOKANAI FUYUKI
  • SAKURAI TAKAHISA
  • GUNJI SHUICHI
  • SUMIYOSHI TAKAYUKI
  • OKADA TERUYUKI
  • ENDO TETSURO
  • FUJITA YOSHIO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • G01T001/29D1D
  • H01J031/50G2
  • H01J043/24M
  • T01J231/501B2
参考情報 (研究プロジェクト等) PRESTO Information and Cell Function AREA
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