Signal processing from a detector of a radiometric density meter - results of empirical studies

Mining of Sustainable Development

生态环境科学

Cierpisz, S.^1 ; Joostberens, J.^2 ; Sobierajski, W.^1

Institute of Innovative Technologies EMAG, 31 Leopolda, Katowice

40-189, Poland^1

Silesian University of Technology, Faculty of Mining and Geology, 2 Akademicka Street, Gliwice

44-100, Poland^2

关键词: Calibration characteristics;    Density change;    Density meter;    Density value;    Dynamic property;    Empirical studies;    Gamma radiation sources;    Measurement time;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/261/1/012005/pdf
DOI  :  10.1088/1755-1315/261/1/012005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The paper presents the results of signal processing from an industrial radiometric density meter with a 137Cs gamma radiation source and a scintillation counter as a detector. There are presented the results of the most important stages of signal processing from the detector, such as the formation of the pulse series to the digital form, counting pulses by the meter and determining the density values based on the calibration characteristics of the device. The principles of density meter calibration were also presented in the case of using the whole 137Cs radioactivity spectrum as well as for the photopeak. The probability distributions of the impulse series from the detector before and after the isolation of the photoeak were presented and compared with the theoretical Poisson distribution. The measurement time is an essential parameter determining the dynamic properties of the density meter. The paper presents an example of empirical selection of measurement time in case of step density change.