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Title: Fast CsI-phoswich detector

An improved phoswich radiation detector used pure CsI crystal and a fast plastic scintillator and a single photomultiplier tube. The plastic is arranged to receive incident radiation, and that which passed through then strikes the CsI crystal. Scintillation light from both the plastic and CsI crystal are applied to the photomultiplier tube, with the light from the plastic passing through the crystal without absorption therein. Electronics are provided for analyzing the output of the photomultiplier tube to discriminate responses due to the plastic and the CsI crystal, through short gate and long gate integration, to produce results which are indicative of the characteristics of the different types of incident radiation, even in the presence of large amounts of radiation. The phoswich detector has excellent timing resolution. The scintillators of the CsI- phoswich were chosen for their fast risetimes, of about 3 ns for NE102A, and 30 ns for the pure CsI. 5 figs.
Inventors:
Issue Date:
OSTI Identifier:
228060
Assignee:
James R. Langenbrunner, Santa Fe, NM (United States) PTO; SCA: 440101; PA: INS-96:011471; EDB-96:081300; SN: 96001584039
Patent Number(s):
US 5,514,870/A/
Application Number:
PAN: 8-212,710
Contract Number:
FG02-87ER40362
Resource Relation:
Other Information: PBD: 7 May 1996
Research Org:
University of Minnesota
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; SOLID SCINTILLATION DETECTORS; DESIGN; CESIUM IODIDES; PHOTOMULTIPLIERS; ELECTRONIC EQUIPMENT; TIMING PROPERTIES

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