Machida Masahiko

マチダマサヒコ | Machida Masahiko

Affiliation and department：

Research field (1)： Nuclear engineering

Research theme for competitive and other funds (32)：

2022 - 2025 Study of high performance and accuracy eigenvalue solvers for quantum many-body systems
2020 - 2023 Demonstration of multi-photon laser emission from superconducting intrinsic Josephson junctions
2018 - 2023 エクサスケール計算機を想定した量子モデルシミュレーションに対する並列化・高速化
2016 - 2021 Neutron detection efficiency improved by employing dual current-biased kinetic inductance detectors
2016 - 2021 Development of cesium-free mineralization for volume reduction and reuse of radioactive contaminated soil in Fukushima

2016 - 2019 Metal accumulation and retention mechanism in lichen, and applicability of radioactive fallout evaluation

2016 - 2019 Development of evaluation method of nuclear fuel thermophysical properties by first-principles calculation using large-scale computing

2016 - 2019 Research and Development of Innovative Lithium Isotope Separation Using an Ionic Superconductor with Lithium-6 Adsorption

2015 - 2018 High perfoemance computing for quamtum many-body problem using accelerators

2014 - 2018 trial of the model free-observation of anomalous electron-phonon coupling

2014 - 2017 Higgs mode in bulk, surface and junction of multiband supercondcutors

2012 - 2016 Optimization of unconventional superconductivity through Fermi surface topology

2011 - 2016 All Solid State Superconducting System for Neutron Radiography with One Million Pixels and Submicron Resolution

2011 - 2014 Elucidation of helium behavior in MA-MOX fuel by use of computational science and control of defect formation

2010 - 2014 Mathematical studies for nonlocal effect on emergence of localized patterns in dissipative systems and applications

2011 - 2013 Development of parallelization strategy and speedup technique for 2D quamntum system on many-core parallel machines

2010 - 2012 Josephson effect and Leggett mode in multi-gap intrinsic Josephson junctions

2011 - 2011 サブミクロン分解能を持った固体超伝導中性子検出器によるリニアアレイ・システム

2008 - 2010 Development of Parallelization Method of Simulation Method for Quantum Many-body Problem

2007 - 2010 Neutron Imaging using Superconducting Detector Array

2008 - 2009 量子渦糸乱流の大規模シミュレーションによる研究II

2007 - 2009 Mathematical studies for bifurcation structures and transient dynamics of model equations in the superconductivity and BEC

2007 - 2008 Study of corporative macroscopic quantum effects in intrinsic Josephson junction stacks

2006 - 2007 Dynamics of Quantum Vortex in Superfluid and Superconductor

2006 - 2007 Interaction between novel vortices in nano-structured superconductors

2006 - 2007 Development of Numerical Algorithm for Quantum Atomic Gas

2006 - 2007 量子渦糸乱流の大規模シミュレーションによる研究

2005 - 2006 Theoretical studies of BEC/BCS states in quantum atomic gases

2004 - 2006 Observation and manipulation of vortices in high-Tc superconducting micro-structures

2004 - 2005 3-Dimensional Simulation of Quantum Vortex in a Bose-Einstein Condensate

2004 - 2005 Theoretical study for the superconducting state in nano-superconductors

2004 - 2005 Superconducting neutron detector by using MgB_2

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Papers (537)：

The Dang Vu, Hiroaki Shishido, Kazuya Aizawa, Takayuki Oku, Kenichi Oikawa, Masahide Harada, Kenji M. Kojima, Shigeyuki Miyajima, Kazuhiko Soyama, Tomio Koyama, et al. Application of Energy-Resolving Neutron Imaging to Major-Component Analyses of Materials Using Four-Channel Superconducting Detector. IEEJ Transactions on Electrical and Electronic Engineering. 2024
The Dang Vu, Hiroaki Shishido, Kazuya Aizawa, Takayuki Oku, Kenichi Oikawa, Masahide Harada, Kenji M. Kojima, Shigeyuki Miyajima, Kazuhiko Soyama, Tomio Koyama, et al. Neutron transmission imaging system with a superconducting kinetic inductance detector. Journal of Physics: Conference Series. 2024. 2776. 1. 012009-012009
Takekazu Ishida, The Dang Vu, Hiroaki Shishido, Kazuya Aizawa, Takayuki Oku, Kenichi Oikawa, Masahide Harada, Kenji M. Kojima, Shigeyuki Miyajima, Tomio Koyama, et al. Neutron Transmission CB-KID Imager Using Samples Placed at Room Temperature. Journal of Low Temperature Physics. 2024. 214. 3-4. 152-157
Terumi Dohi, Kazuki Iijima, Masahiko Machida, Hiroya Suno, Yoshihito Ohmura, Kenso Fujiwara, Sigeru Kimura, Futoshi Kanno. Application of radiocaesium microscale observation methodology to parmelioid lichen and ultrastructural analyses using STEM-EDS. Environmental Radiochemical Analysis VII. 2023. 50-57
Keita Kobayashi, Masahiko Okumura, Hiroki Nakamura, Mitsuhiro Itakura, Masahiko Machida, Shingo Urata, Kentaro Suzuya. Machine learning molecular dynamics reveals the structural origin of the first sharp diffraction peak in high-density silica glasses. Scientific Reports. 2023. 13. 1

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MISC (272)：

町田昌彦, 岩田亜矢子, 山田進, 乙坂重嘉, 小林卓也, 船坂英之, 森田貴己. Estimation of Temporal Variation of Discharged Tritium from Port of Fukushima Dai-ichi Nuclear Power Plant: Analysis of the Temporal Variation and Comparison with released Tritium from Japan and Major Nuclear Facilities Worldwide. 日本原子力学会和文論文誌. 2022. 21. 1
KIM Minsik, MALINS Alex, 町田昌彦, 吉村和也, 吉田浩子, 斎藤公明. Investigation on distribution of radioactive substances in Fukushima (7) Study on reduction factors calculated using continuously monitored air dose rates around houses. 日本原子力学会秋の大会予稿集(CD-ROM). 2020. 2020
吉田浩子, KIM Minsik, MALINS Alex, 町田昌彦, 吉村和也. Investigation on distribution of radioactive substances in Fukushima (6) Temporal changes in reduction factors by wooden residential houses within former/current evacuation areas. 日本原子力学会秋の大会予稿集(CD-ROM). 2020. 2020
Status of Study of Long-term Assessment of Transport of Radioactive Contaminants in the Environment of Fukushima (FY2018). JAEA-research. 2019. 2019. 2. 1-14,1-235
町田昌彦, 山田進, 永井佑紀, 中村博樹, 志賀基之. 原子力分野における機能材料開発に資するマルチスケール・マルチフィジックスシミュレーションの基盤構築. 日本原子力研究開発機構JAEA-Review(Web). 2018. 2017-023. 125-127 (WEB ONLY)

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Lectures and oral presentations (458)：

A First-principles study on the mechanical properties of (Th,Pu)O$_2$
(Nuclear Materials Conference 2018 (NuMat 2018) 2018)
Non-ionic interaction between cesium and clay minerals
(2018年度日本地球化学会第65回年会 2018)
Radionuclide transport inside and outside the harbor of Fukushima Daiichi Nuclear Power Plant; Analysis based on monitoring data
(日本原子力学会2018年秋の大会 2018)
Numerical studies for seasonal fluctuation of cesium transport at dam reservoir in the Hama-dori District of Fukushima Prefecture
(日本原子力学会2018年秋の大会 2018)
Thermal properties evaluation of fluorite structure oxides
(日本原子力学会2018年秋の大会 2018)

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