Nuclear Technology & Radiation Protection Journal


NT & RP Journal	COMPARISON OF THE RESPONSE OF DIFFERENT VOLTAGE DIVIDERS TO LOW-LEVEL MEASUREMENT USING A LARGE PLASTIC SCINTILLATOR INTENDED FOR RADIATION PORTAL MONITORS
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Vol. XXXVI, No. 3, Pp. 211-298 September 2021 UDC 621.039+614.876:504.06 ISSN 1451-3994 Back to Contents	Pages: 249-254 Authors: Lucie Fiserova, Jiri Janda, and Pavel Skotak Abstract The work deals with the comparison of voltage dividers with different wiring of resistors and capacitors. The voltage divider recommended by the manufacturer of the used photomultiplier (ET Enterprises, GB) was used as a reference. The aim was to assess the influence of different voltage dividers together with the large volume scintillation detector on detection parameters such as the efficiency of the measurement and dose rate linearity using ²⁴¹Am, ¹³⁷Cs, and ⁶⁰Co gamma sources. The experiments showed relatively great differences between 15_10(_C) voltage divider (R1 and R2-R11, 15 MΩ and 10 MΩ) and the rest. Furthermore, it was confirmed that the voltage divider recommended by the manufacturer of the used photomultiplier showed the best results, but some of the measured dividers exhibited similar results and therefore can be used in radiation portal monitors as well. Key words: voltage divider, radiation portal monitor, gamma-radiation, organic-based polystyrene scintillator FULL PAPER IN PDF FORMAT (657 KB)
Vinča Institute of Nuclear Sciences :: Designed by milas :: July 2007 Operated by acapanic :: Last updated on January, 2022

Pages: 249-254

Authors: Lucie Fiserova, Jiri Janda, and Pavel Skotak

Abstract

The work deals with the comparison of voltage dividers with different wiring of resistors and capacitors. The voltage divider recommended by the manufacturer of the used photomultiplier (ET Enterprises, GB) was used as a reference. The aim was to assess the influence of different voltage dividers together with the large volume scintillation detector on detection parameters such as the efficiency of the measurement and dose rate linearity using ²⁴¹Am, ¹³⁷Cs, and ⁶⁰Co gamma sources. The experiments showed relatively great differences between 15_10(_C) voltage divider (R1 and R2-R11, 15 MΩ and 10 MΩ) and the rest. Furthermore, it was confirmed that the voltage divider recommended by the manufacturer of the used photomultiplier showed the best results, but some of the measured dividers exhibited similar results and therefore can be used in radiation portal monitors as well.

Key words: voltage divider, radiation portal monitor, gamma-radiation, organic-based polystyrene scintillator

FULL PAPER IN PDF FORMAT (657 KB)