CATHODE FOR EMITTING PHOTOELECTRON OR SECONDARY ELECTRON, PHOTOMULTIPLIER TUBE, AND ELECTRON-MULTIPLIER TUBE

Title:

CATHODE FOR EMITTING PHOTOELECTRON OR SECONDARY ELECTRON, PHOTOMULTIPLIER TUBE, AND ELECTRON-MULTIPLIER TUBE

Document Type and Number:

WIPO Patent Application WO/2001/054157

Kind Code:

A1

Abstract:

A cathode (5) for emitting photoelectrons or secondary electrons comprises a nickel electrode substrate (5c) with an aluminum layer (5b) deposited on it; an intermediate layer (5a) consisting of carbon nanotubes formed on the aluminum layer; and an alkaline metal layer (5d) formed on the intermediate layer (5a) and composed, for example, of particles of an alkali antimony compound that either emits photoelectrons in response to incident light or emits secondary electrons in response to incident electrons. The decrease in defect density of the particles reduces the probability of recombination of electron and hole remarkably, thus increasing quantum efficiency.

Inventors:

KINOSHITA MASAO (JP)
WATANABE HIROYUKI (JP)
NISHIURA RIE (JP)

Application Number:

PCT/JP2001/000213

Publication Date:

July 26, 2001

Filing Date:

January 16, 2001

Export Citation:

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Assignee:

HAMAMATSU PHOTONICS KK (JP)
KINOSHITA MASAO (JP)
WATANABE HIROYUKI (JP)
NISHIURA RIE (JP)

International Classes:

H01J1/34; H01J1/32; H01J1/35; H01J40/06; H01J43/06; H01J43/08; H01J43/10; H01J43/18; (IPC1-7): H01J1/35; H01J40/06; H01J43/10

Foreign References:

JPH10149761A	1998-06-02
JPH11120899A	1999-04-30
US5619091A	1997-04-08
JP2651329B2	1997-09-10
JPH0883561A	1996-03-26
JP2500209B2	1996-05-29
JPH06119872A	1994-04-28
JP2651329B2	1997-09-10
JPH11120899A	1999-04-30

Other References: