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.
- Inventors:
-
- Aurora, IL
- Issue Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- OSTI Identifier:
- 866724
- Patent Number(s):
- 4772793
- Application Number:
- 07/104,029
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
- DOE Contract Number:
- AC02-76CH03000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- dead-time; compensation; logarithmic; display; rate; meter; improved; circuit; provided; application; radiation; survey; detector; subject; dead; time; compensates; wide; range; count; rates; producing; pulse; detected; event; live-time; spans; interval; pulses; circuits; average; value; logarithm; values; obtained; logarithms; subtracted; provide; signal; proportional; corrected; effects; produces; indication; capable; audible; events; wide range; count rate; count rates; radiation survey; detected event; survey meter; detected events; circuit produces; dead time; improved circuit; time pulse; rate meter; /250/327/
Citation Formats
Larson, John A, and Krueger, Frederick P. Dead-time compensation for a logarithmic display rate meter. United States: N. p., 1988.
Web.
Larson, John A, & Krueger, Frederick P. Dead-time compensation for a logarithmic display rate meter. United States.
Larson, John A, and Krueger, Frederick P. Tue .
"Dead-time compensation for a logarithmic display rate meter". United States. https://www.osti.gov/servlets/purl/866724.
@article{osti_866724,
title = {Dead-time compensation for a logarithmic display rate meter},
author = {Larson, John A and Krueger, Frederick 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {9}
}
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