WIRE SCANNER WITH AUTOMATIC DECAY CORRECTION SYSTEM

Journal Article · Tue Oct 01 04:00:00 EDT 1963 · Nippon Genshiryoku Gakkaishi (Japan)

DOI:https://doi.org/10.3327/jaesj.5.854· OSTI ID:4131465

Kobayashi, S

A wire scanner was manufactured to measure the activities of wires which were irradiated in a reactor core. The detection head of this scanner is a 4 pi gas-flow counter and is moved intermittently by a partly cogless gear and a servomotor along the wire stretched through the head. The counting time of a wire is controlled by counting the preset number of counts of the same decaying material activated simultaneously with the wire of interest. As the counting continues, the counting interval becomes progressively longer, thus the radioactive decay of the wire being automatically corrected. Main advantages of this timing method are that the data, having been directly corrected, can be presented immediately without any further time correction and that for a given wire the statistics of counting are independent of the time of counting. It was recognized that this wire scanner with automatic decay correction system was very useful in measuring fine structures of the spatial distribution of neutron flux. (auth)

• Research Organization: Hitachi, Ltd., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-004111
• OSTI ID: 4131465
• Journal Information: Nippon Genshiryoku Gakkaishi (Japan), Journal Name: Nippon Genshiryoku Gakkaishi (Japan) Vol. Vol: 5; ISSN NGEGA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

COUNTERS
DECAY
DISTRIBUTION
GAS FLOW
INSTRUMENTATION
IRRADIATION
MEASURED VALUES
NEUTRON DETECTION
NEUTRON FLUX
PERFORMANCE
PULSES
RADIOACTIVITY
REACTOR CORE
SERVOMECHANISMS
STATISTICS
WIRES