A TRANSISTORIZED POCKET RADIATION DOSIMETER WITH AURAL ALARM

Technical Report · Fri Sep 15 04:00:00 EDT 1961

OSTI ID:4640735

Masden, G W

Operation, Richland, Wash.). Sept. 15, l961. Contract The prototype of a transistorized pocket radiation dosimeter with audible alarm was developed and tested. Though all tests are not complete, the tests which have been carried out indicate reliable performance. Some minor problems involving the effects of severe thermal transients are being corrected. The device is satisfactory for general operation over the range of the incorporated modified pencil dosimeter. Typically, this range is 0 to 200 mr although, quite obviously, higher rarge units can be fabricated. Continuous operation battery life approaches 60 to 80 hours although judicious battery selection can easily extend this to be in excess of 100 hours. By selective dosimeter chamber charging, the alarm point can be controlled for any point over the operational range of the sensor. The modified sensor employs an illuminated quartz fiber, a machined slit past which the slowly discharging fiber moves to activate the incorporated transistor circuitry, and a secondary sensor used for temperature compensation of the basic sensor. Operation is simple, reliable, and positive and the mechanical ruggedness is limited only by the actual pencil dosimeter used. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• DOE Contract Number: AT(45-1)-1350
• NSA Number: NSA-17-036148
• OSTI ID: 4640735
• Report Number(s): HW-70951
• Country of Publication: United States
• Language: English

Related Subjects

BATTERIES
CIRCUITS
DOSEMETERS
EFFICIENCY
INSTRUMENTS AND INSTRUMENTATION
IONIZATION CHAMBERS
LIGHT
MONITORING
QUARTZ
RADIATION DOSES
SOUND
STABILITY
TEMPERATURE
TESTING
TRANSIENTS
TRANSISTORS