Response of plastic scintillator to gamma sources

Tajudin SM 1 , Namito Y 2 , Sanami T 3 , Hirayama H 4

Affiliations 

  • 1 Faculty of Health Sciences, Universiti Sultan Zainal Abidin (UniSZA), 21300, Kuala Nerus, Terengganu, Malaysia. Electronic address: suffian@unisza.edu.my
  • 2 High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan. Electronic address: namito@kek.jp
  • 3 High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan. Electronic address: sanami@kek.jp
  • 4 High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan. Electronic address: hideo@kek.jp
Appl Radiat Isot, 2020 May;159:109086.
PMID: 32250760 DOI: 10.1016/j.apradiso.2020.109086

Abstract

In this study, we developed a method for directly determining the energy deposited over the entire energy range by monitoring the light output from a plastic scintillator under gamma irradiation. The relative light output was analyzed based on Birks' semi-empirical formula for ionization to obtain the quenching parameter as kB = 0.016 ± 0.0004 g cm-2 MeV-1. Comparisons of experimental and calculated results for the light output spectra showed that considering the quenching effect, background subtraction, source casing, and energy sampling were essential for achieving good agreement.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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