Daily Variations of Gamma-ray Background and Radon Concentration
نویسندگان
چکیده
The reduction of the gamma-ray background contributes to the reduction of statistical errors of low activity measurements, while reduction of time variations of the background leads to lower systematic errors, especially in measurements of activities that coexist in the background. The sources of time variation of the background in a typical measurement of low activity are daily variations of radon concentration and aperiodic variations of cosmic-rays intensity. In this study we investigated the conditions that contribute to variations of radon and background by analyzing their time series in our ground level and shallow underground laboratories.
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