Naoki Yamano

Effect of Processing History on Flow‐Induced Crystallization of Polyethylene With Long‐Chain Branches

Kenta Komatsu, Naoki Yamano, Masayuki Yamaguchi

ABSTRACT The effect of applied processing history on rheological properties and flow‐induced crystallization is studied in polyethylene with long‐chain branches that is prepared using a metallocene catalyst. The sample processed by a two‐roll mill, in which elongational flow is dominant, shows marked …

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Reactor antineutrinos and novel application to real-time remote monitoring of nuclear reactors

Chikako Ishizuka, Karen Sasaki, Naoki Yamano, Tadashi Yoshida et autres

We have constructed a computational scheme to obtain energy spectra of reactor antineutrinos, including the inverse β-decay process through which they were to be detected.The antineutrino spectra from all the fission products were calculated based on the gross theory of β-decay.This data …

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Effects of correlations in uncertainties of total cross section and elastic angular distribution for a deep penetration of 14-MeV neutrons in Cu

Naoki Yamano, Satoshi Chiba, Tsunenori Inakura, Chikako Ishizuka

Uncertainty in neutron reaction rates after penetrating a thick copper benchmark assembly was estimated based on two different kinds of Total Monte Carlo methods under random sampling methodology. Five hundred random nuclear data files were generated for 63Cu by Bayesian Monte Carlo …

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JENDL-5 benchmark test for shielding applications

Chikara Konno, Masayuki Ohta, Saerom Kwon, Seiki Ohnishi et autres

JENDL-5 was validated from a viewpoint of shielding applications under the Shielding Integral Test Working Group of the JENDL Committee. The following benchmark experiments were selected: JAEA/FNS in-situ experiments, Osaka Univ./OKTAVIAN TOF experiments, ORNL/JASPER sodium experiments, NIST iron experiment and QST/TIARA experiments. …

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Effect of correlation between cross sections and angular distributions in nuclear data of 63Cu on estimation of uncertainty of neutron penetration

Naoki Yamano, Tsunenori Inakura, Chikako Ishizuka, Satoshi Chiba

Uncertainty in neutron reaction rates after penetrating a 608mm-thick copper benchmark experiment performed by the FNS facility of JAEA was estimated based on two different kinds of the Total Monte Carlo methods under random sampling methodology. 500 random nuclear data files were …

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Insights concerning the Fukushima Daiichi Nuclear Accident

Toshihiko Ohnuki, Toyohiko Yano, Naoki Yamano

事故後，日本原子力学会編集委員会は，月刊誌である日本原子力学会誌ATOMOΣや和文論文誌を通じて，事故に関連するさまざまな側面について多数の解説，報告および研究論文を掲載した。これらの記録は，この重大事故からの回復を追跡するとともに，学会の会員だけでなく，事故の被害者や日本の住民を含む一般の人たちのためにも書かれている。これらの記事を世界に発信することを目的として英訳を進め発刊に至った。本報告は，この英文アーカイブ報告書を紹介したものである。

Crucial importance of correlation between cross sections and angular distributions in nuclear data of 28 Si on estimation of uncertainty of neutron dose penetrating a thick concrete

Naoki Yamano, Tsunenori Inakura, Chikako Ishizuka, Satoshi Chiba

Uncertainty in neutron dose after penetrating a 3-m-thick concrete was estimated based on three different kinds of Total Monte Carlo methods under random sampling methodology. A thousand random nuclear data files were generated for 28Si by T6 by perturbing underlying model parameters. …

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Utilization of nuclear data covariance and error propagation by Total Monte Carlo method

Naoki Yamano

Survey of Tsuruga Inhabitants Concerning Radiation and Its Risks

Yoshihiko Shinoda, Naoki Yamano

The Fukushima Daiichi Nuclear Accident has led to changes in the acceptance of nuclear power in many people.The authors conducted an opinion survey of 300 adult inhabitants of Tsuruga city in Fukui Prefecture, Japan.The aim of this survey is to obtain people's …

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Reconsidering of Risk Communication

Naoki Yamano

This commentary looks at issues and challenges that were encountered in relation to nuclear risk communication in the aftermath of the Fukushima Daiichi Nuclear Accident.Conventional practices are critically examined to consider how risk communication in the nuclear sector should be reconstructed, and …

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Risk Communication on Health Effects of Low-dose Ionizing Radiation

Naoki Yamano

A new methodology of community-based risk communication was developed in cooperation with the local community by targeting the risks associated with the health effects of exposure to low-dose radiation after the Fukushima Daiichi Nuclear Accident.Before and after the study sessions that were …

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Estimation of uncertainty in transmutation rates of LLFPs in a fast reactor transmutation system via an estimation of the cross-section covariances

Naoki Yamano, Tsunenori Inakura, Chikako Ishizuka, Satoshi Chiba

A new concept of transmutation system for six long-lived fission products (LLFPs: 79Se, 93Zr, 99Tc, 107Pd, 129I, and 135Cs) consisting of three small-size fast reactor cores was proposed. In order to establish a method to estimate the effects of cross-section uncertainties on …

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