Development of directional gamma ray measuring instrument for evaluating radiation incident on architectural space

Hikaru Kobayashi, Ryo Yamamori, Shusaku Nakajima, Yusuke Ichijo, Hiroko Yoshida, Atsuo Nozaki, Hiroshi Yoshino

Research output: Contribution to journalArticle

Abstract

In this paper, the authors reported on a design method of a directional gamma~ray measuring instrument suitable for field measurement consisting of a disk" shaped shield and a survey meter. The authors newly defined indices regarding viewing angle, which is required to determine appropriate shield size and distance between the shield and survey meter, and the configuration of the instrument was examined quantitatively with the indices using radiation analysis code PHLTS. An example of viewing: Angle ±45° with various size shield and a 3 "inch Xal∗ scintillation survey meter was discussed and confirmed that a 150mm shield 35mm from the scintillator gave appropriate results.

Original languageEnglish
Pages (from-to)967-973
Number of pages7
JournalJournal of Environmental Engineering (Japan)
Volume84
Issue number764
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • Nuclear disaster
  • Radioactive contamination. directional radiation dose. measuring instrument

ASJC Scopus subject areas

  • Environmental Engineering

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