2019 Annual Meeting

Presentation information

Oral presentation

VII. Health Physics and Environmental Science » Health Physics and Environmental Science

[2H05-08] Environmental Radioactivity 2

Thu. Mar 21, 2019 10:55 AM - 12:00 PM Room H (Common Education Bildg. 2 2F No.27)

Chair:Yoshihiko Tanimura(JAEA)

11:10 AM - 11:25 AM

[2H06] PHITS Models for Ambient Dose Equivalent Rates in Fukushima’s Radiocesium Contaminated Forests

*Alex Malins1, Naohiro Imamura2, Tadafumi Niizato1, Minsik Kim1, Kazuyuki Sakuma1, Yoshiki Shinomiya2, Satoru Miura2, Masahiko Machida1 (1. JAEA, 2. FFPRI)

Keywords:forest, ambient dose equivalent, radiocesium, modeling, simulation, PHITS, Monte Carlo, environmental radioactivity, Fukushima Dai-ichi accident, Fukushima

PHITS Monte Carlo models were used to assess factors affecting ambient dose equivalent rates (H*(10)) in forests of Fukushima Prefecture. Models with different levels of detail were used to understand how the distribution of radioactive cesium within forests, shielding by trees, soil composition and moisture rates affect H*(10). The models were parametrized using measurements from deciduous and evergreen coniferous forests in Fukushima Prefecture.