Determination of radiocesium depth profile by unfolding method with imaging plate

Thanh Tat Nguyen; Tsuyoshi Kajimoto; Kenichi Tanaka; Satoru Endo

doi:10.1016/j.apradiso.2018.09.014

Determination of radiocesium depth profile by unfolding method with imaging plate

Appl Radiat Isot. 2018 Dec:142:128-134. doi: 10.1016/j.apradiso.2018.09.014. Epub 2018 Sep 13.

Authors

Thanh Tat Nguyen¹, Tsuyoshi Kajimoto¹, Kenichi Tanaka¹, Satoru Endo²

Affiliations

¹ Quantum Energy Applications, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
² Quantum Energy Applications, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan. Electronic address: endos@hiroshima-u.ac.jp.

PMID: 30292956
DOI: 10.1016/j.apradiso.2018.09.014

Abstract

Radiocesium depth profiles in Fukushima soil cores were derived with an unfolding method by using an imaging plate with a response matrix for ¹³⁴Cs, ¹³⁷Cs, and ⁴⁰K radionuclides calculated by a PHITS simulation. The unfolded depth profiles were validated by comparison with profiles measured with a Ge detector. The unfolded depth profiles agreed well with those measured by the Ge detector. The depth profiles obtained were obtained with a 1 mm depth bin width and are useful for estimating the migration of radiocesium in soil.

Keywords: Depth bin (4–6 keywords); Depth profile; Imaging plate; Response function; Unfolding method.

Publication types

Review