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Title: Non-cross talk multi-channel photomultiplier using guided electron multipliers

An improved multi-channel electron multiplier is provided that exhibits zero cross-talk and high rate operation. Resistive material input and output masks are employed to control divergence of electrons. Electron multiplication takes place in closed channels. Several embodiments are provided for these channels including a continuous resistive emissive multiplier and a discrete resistive multiplier with discrete dynode chains interspaced with resistive layers-masks. Both basic embodiments provide high gain multiplication of electrons without accumulating surface charges while containing electrons to their proper channels to eliminate cross-talk. The invention can be for example applied to improve the performance of ion mass spectrometers, positron emission tomography devices, in DNA sequencing and other beta radiography applications and in many applications in particle physics. 28 figs.
Inventors:
; ;
Issue Date:
OSTI Identifier:
106711
Assignee:
Southeastern Universities Research Association, Inc., Newport News, VA (United States) PTO; SCA: 426000; 440000; PA: EDB-95:137255; SN: 95001461634
Patent Number(s):
US 5,453,609/A/
Application Number:
PAN: 8-141,331
Contract Number:
AC05-84ER40150
Resource Relation:
Other Information: PBD: 26 Sep 1995
Research Org:
Southeastern University Research Association
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; PHOTOMULTIPLIERS; DESIGN; USES; ELECTRON MULTIPLIERS; MEASURING INSTRUMENTS; HIGH ENERGY PHYSICS; POSITRON COMPUTED TOMOGRAPHY; BETA RADIOGRAPHY

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