background count

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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.

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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.

Determination of the neutron lifetime using magnetically trapped ... by Huffman, P.R. / Journal of Research of the National Institute of Standards and Technology

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.

Serious shortfall of solar neutrinos by Science News

At the end of each data-taking cycle the gate potential was lowered to zero to allow a background count.

Determination of the electron-antineutrino angular correlation ... by Byrne, J. / Journal of Research of the National Institute of Standards and Technology

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