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Journal Articles

Estimation of children's thyroid equivalent doses in 16 municipalities after the Fukushima Daiichi Nuclear Power Station accident

Suzuki, Gen*; Ishikawa, Tetsuo*; Oba, Takashi*; Hasegawa, Arifumi*; Nagai, Haruyasu; Miyatake, Hirokazu*; Yoshizawa, Nobuaki*

Journal of Radiation Research (Internet), 63(6), p.796 - 804, 2022/11

https://doi.org/10.1093/jrr/rrac058
 Times Cited Count：2 Percentile：44.25(Biology)

To elucidate the association between radiation dose and thyroid cancer after the 2011 Fukushima Daiichi Nuclear Power Station (FDNPS) accident, it is essential to estimate individual thyroid equivalent doses (TEDs) to children. In a previous study, we reported a methodology for reconstructing TEDs from inhalation based on individual behavioural survey sheets combined with a spatiotemporal radionuclides database constructed by an atmospheric transport, diffusion, and deposition model (ATDM). In the present study, we further refined our methodology and estimated the combined TEDs from inhalation and ingestion among children in 16 municipalities around the nuclear power station utilizing 3,256 individual whereabouts questionnaire survey sheets. Distributions of estimated TEDs were similar to estimates based on direct thyroid measurements in 1080 children in Iwaki City, Kawamata Town, Iitate Village, and Minamisoma City. Mean TEDs in 1-year-old children ranged from 1.3 mSv in Date City to 14.9 mSv in Odaka Ward in Minamisoma City, and the 95th percentiles varied from 2.3 mSv in Date City to 28.8 mSv in Namie Town. In the future, this methodology can be useful for a case-control study of thyroid cancer after the FDNPS accident.

Journal Articles

Coulomb excitation of $$^{156}$$Gd

Sugawara, Masahiko*; Kusakari, Hideshige*; Yoshizawa, Hirokazu*; Inoue, Hikaru*; Morikawa, Tsuneyasu*; Shizuma, Toshiyuki; Srebrny, J.*

Physical Review C, 83(6), p.064308_1 - 064308_13, 2011/06

https://doi.org/10.1103/PhysRevC.83.064308
 Times Cited Count：6 Percentile：42(Physics, Nuclear)

Multiple Coulomb-excitation experiments for $$^{156}$$Gd were made with a 118 MeV $$^{32}$$S beam and a 225 MeV $$^{58}$$Ni beam. The ground-state band, the $$beta$$ band ($$K$$=0$$^{+}$$), and the $$gamma$$ band ($$K$$=2$$^{+}$$) were observed up to the 18$$^+$$, 14$$^+$$, and 12$$^+$$ states, respectively, while the octupole band ($$K$$=1$$^{-}$$) was observed up to the 15$$^-$$ state, through the analysis of particle-$$gamma$$-$$gamma$$ data. The intrinsic matrix elements entering the generalized intensity relations were obtained so as to reproduce the spin dependence of the $$E$$2 matrix elements extracted from the experimental results of particle-$$gamma$$ angular correlation for the transitions within each band and between each band and the ground-state band by the least-squares search code gosia. The change of characters in the $$beta$$ and $$gamma$$ bands is discussed as a possible cause for the variation of the $$E$$2 matrix elements in the higher-spin region.

Oral presentation

Investigation of uncertainties in estimating thyroid equivalent dose from body surface contamination measurements

Oba, Takashi*; Ishikawa, Tetsuo*; Miyatake, Hirokazu*; Nagai, Haruyasu; Hasegawa, Arifumi*; Yoshizawa, Nobuaki*; Suzuki, Gen*

no journal, , 

no abstracts in English

Oral presentation

Reconstruction of childhood thyroid doses based on whereabout questionnaire sheets in combination with ATDM simulation

Suzuki, Gen*; Oba, Takashi*; Ishikawa, Tetsuo*; Hasegawa, Arifumi*; Nagai, Haruyasu; Yoshizawa, Nobuaki*; Miyatake, Hirokazu*

no journal, , 

no abstracts in English

Oral presentation

Estimation of internal exposure doses from tap water intake after Fukushima Daiichi Nuclear Power Station accident and its uncertainty

Miyatake, Hirokazu*; Yoshizawa, Nobuaki*; Suzuki, Gen*; Nagai, Haruyasu; Oba, Takashi*; Hasegawa, Arifumi*; Ishikawa, Tetsuo*; Regalado, Mariko*

no journal, , 

no abstracts in English

5 (Records 1-5 displayed on this page)
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