Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Kanzaki, Norie; Sakoda, Akihiro; Kataoka, Takahiro*; Tanaka, Hiroshi; Yamaoka, Kiyonori*
no journal, ,
no abstracts in English
Masukawa, Yuki*; Kataoka, Takahiro*; Shuto, Hina*; Naoe, Shota*; Yano, Junki*; Kanzaki, Norie; Sakoda, Akihiro; Tanaka, Hiroshi; Hanamoto, Katsumi*; Mitsunobu, Fumihiro*; et al.
no journal, ,
no abstracts in English
Nishi, Soyoka*; Kataoka, Takahiro*; Ishida, Tsuyoshi*; Naoe, Shota*; Shuto, Hina*; Yano, Junki*; Kanzaki, Norie; Sakoda, Akihiro; Tanaka, Hiroshi; Mitsunobu, Fumihiro*; et al.
no journal, ,
no abstracts in English
Naoe, Shota*; Kataoka, Takahiro*; Yano, Junki*; Shuto, Hina*; Kanzaki, Norie; Sakoda, Akihiro; Yamaoka, Kiyonori*
no journal, ,
no abstracts in English
Imahashi, Atsushi; Hosomi, Kenji; Fujisawa, Makoto; Takada, Chie
no journal, ,
no abstracts in English
Hirade, Tetsuya
no journal, ,
The behavior of OH radicals formed by radiolysis of water is important for reactions in living organisms and corrosion in nuclear reactors. However, OH radicals in various environments exist in the complex structure in water. By utilizing the positron annihilation lifetime-momentum correlation (AMOC), when OH radical having a spin correlation with an electron in the Ps formed at the end of the track reacts with the long-lived ortho-Ps, it can be identified from the yield of singlet Ps after the spin-exchange reaction is larger than that of OH radicals having no spin correlation. AMOC measurements showed that the diffusion behavior change of OH radicals was probably caused by the change of the water liquid structure in the temperature range of 10 to 15 
C and 1 to 2 C.
-ray spectrometry system specific to high dose-rate radiation fields for the retrieval of nuclear fuel debris in Tokyo Electrical Power Company Holdings' Fukushima Daiichi Nuclear Power StationKaburagi, Masaaki; Shimazoe, Kenji*; Kato, Masahiro*; Kurosawa, Tadahiro*; Kamada, Kei*; Kim, K. J.*; Yoshino, Masao*; Shoji, Yasuhiro*; Yoshikawa, Akira*; Takahashi, Hiroyuki*; et al.
no journal, ,
The retrieval of nuclear fuel debris will be started at Tokyo Electrical Power Company Holdings' Fukushima Daiichi Nuclear Power Station. Because of high dose-rate fields on the surface of nuclear fuel debris and these inhomogeneous elements, non-destructive analysis is required during the retrieval. Here, it is presented that a -ray spectrometry system specific to high dose-rate fields was developed and its performance under intense -ray fields was evaluated for the retrieval of nuclear fuel debris.
Mitsuyasu, Yusuke*; Oka, Toshitaka; Takahashi, Atsushi*; Koarai, Kazuma; Kino, Yasushi*; Okutsu, Kenichi*; Sekine, Tsutomu*; Yamashita, Takuma*; Shimizu, Yoshinaka*; Chiba, Mirei*; et al.
no journal, ,
The improvement of the ESR dosimetry is required to apply that for the low-dose exposure of wild animals. We will report our progress of the improvement, and compare the external exposure dose estimated by the ESR dosimetry technique and the calculated result based on the external exposure dose rate of the captured point.