Dead-time compensation for a logarithmic display rate meter
Abstract
An improved circuit is provided for application to a radiation survey meter that uses a detector that is subject to dead time. The circuit compensates for dead time over a wide range of count rates by producing a dead-time pulse for each detected event, a live-time pulse that spans the interval between dead-time pulses, and circuits that average the value of these pulses over time. The logarithm of each of these values is obtained and the logarithms are subtracted to provide a signal that is proportional to a count rate that is corrected for the effects of dead time. The circuit produces a meter indication and is also capable of producing an audible indication of detected events. 5 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- OSTI Identifier:
- 6866672
- Patent Number(s):
- 6104029
- Assignee:
- TIC; EDB-88-179241
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- AC02-76CH03000
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DEAD TIME; CORRECTIONS; ELECTRONIC CIRCUITS; DESIGN; INVENTIONS; LOGARITHMIC RATEMETERS; COUNTING RATEMETERS; ELECTRONIC EQUIPMENT; EQUIPMENT; TIMING PROPERTIES; 440102* - Radiation Instrumentation- Radiation Dosemeters
Citation Formats
Larson, J A, and Krueger, F P. Dead-time compensation for a logarithmic display rate meter. United States: N. p., 1987.
Web.
Larson, J A, & Krueger, F P. Dead-time compensation for a logarithmic display rate meter. United States.
Larson, J A, and Krueger, F P. Mon .
"Dead-time compensation for a logarithmic display rate meter". United States.
@article{osti_6866672,
title = {Dead-time compensation for a logarithmic display rate meter},
author = {Larson, J A and Krueger, F P},
abstractNote = {An improved circuit is provided for application to a radiation survey meter that uses a detector that is subject to dead time. The circuit compensates for dead time over a wide range of count rates by producing a dead-time pulse for each detected event, a live-time pulse that spans the interval between dead-time pulses, and circuits that average the value of these pulses over time. The logarithm of each of these values is obtained and the logarithms are subtracted to provide a signal that is proportional to a count rate that is corrected for the effects of dead time. The circuit produces a meter indication and is also capable of producing an audible indication of detected events. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 05 00:00:00 EDT 1987},
month = {Mon Oct 05 00:00:00 EDT 1987}
}
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