Nuclear radiation measuring method and apparatus having blanking time inversely related to count rate. [for inhibiting measurement during excessive background counts]
Patent
·
OSTI ID:6802588
A method and apparatus are described for inhibiting measurement of nuclear radiation in a scintillation counter during periods of excessive background radioactivity produced, for example, by cosmic energy surges impinging on the scintillation counter. The count rate of a radioactive source or sample being measured is monitored and detector means are provided for detecting the occurrence of an energy surge exceeding a predetermined energy level. When a surge is detected, inhibit means inhibits counting for a time period which varies inversely with the count rate.
- Assignee:
- Beckman Instruments, Inc.
- Patent Number(s):
- US 4049966
- OSTI ID:
- 6802588
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BACKGROUND RADIATION
COINCIDENCE CIRCUITS
COUNTING CIRCUITS
COUNTING RATES
DESIGN
ELECTRONIC CIRCUITS
MEASURING INSTRUMENTS
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SURGES
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BACKGROUND RADIATION
COINCIDENCE CIRCUITS
COUNTING CIRCUITS
COUNTING RATES
DESIGN
ELECTRONIC CIRCUITS
MEASURING INSTRUMENTS
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SURGES