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background count

   Also found in: Dictionary/thesaurus, Wikipedia 0.04 sec.
background count [′bak‚grau̇nd ‚kau̇nt]
(physics)
Responses of the radiation counting system to radiation coming from sources other than the source to be measured.


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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, 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.
 
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