background count


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background count

The evidence or effect on a detector of radiation caused by background radiation. In connection with health protection, the background count includes but is not limited to radiations produced by naturally occurring radioactivity and cosmic rays.
References in periodicals archive ?
Background counts arising from external (to our apparatus) sources continue to be a difficulty; as a point-of-reference, the background count rate drops a factor of five when the reactor is turned off.
However, to detect the radiocarbon level above background count rates considerable sample processing was necessary to enhance the radiocarbon content (isotopic enrichment).
However, the number of neutrino events counted in the experimental is only what one would expect as a background count, and the results may represent some kind of statistical fluke or an unforeseen problem in the apparatus or analysis.
At the end of each data-taking cycle the gate potential was lowered to zero to allow a background count.
The upgraded apparatus should produce an increase in the number of trapped neutrons by more than a factor of 20 without substantial increases in the background count rates.
Typically, automated hematology analyzers are not used for clear and colorless cerebrospinal fluids with low cellular counts because of poor reproducibility and high background counts at medically important clinical decision limits of 0 to 5 cell/[micro]L for adults.
For the most part, football is a diverse and brilliant discipline where skin colour, ethnicity and background counts for little.
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