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Title: Gamma radiation field intensity meter

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.
Inventors:
Issue Date:
OSTI Identifier:
7081958
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) PTO; EDB-94-132815
Patent Number(s):
US 5338938; A
Application Number:
PPN: US 8-044678
Contract Number:
AC05-84OR21400
Resource Relation:
Patent File Date: 9 Apr 1993
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DOSEMETERS; DESIGN; GAMMA DOSIMETRY; DOSE RATES; ELECTRIC CURRENTS; ELECTROSCOPES; IONIZATION CHAMBERS; CURRENTS; DOSIMETRY; ELECTRIC MEASURING INSTRUMENTS; ELECTRICAL EQUIPMENT; EQUIPMENT; MEASURING INSTRUMENTS; RADIATION DETECTORS; 440102* - Radiation Instrumentation- Radiation Dosemeters