Recruitment for Postdoctoral Fellow
(Fixed-term researcher)

1. Physics	Chemistry	Mathematics	Geo and Environemtal Sciences	Biology	Radiation
   Mechanics	Material	Electricity and Electronics	Architectural and Civil Engineering	Applied Physics	Applied Chemistry
   Chemical Engineering	Measurements and Instruments	Computer and Information	Robotics	Other	All

2. No	Theme
   	Department	Section	Location	Contact Person	Radiation Worker/ Non-Radiation Worker	Field (for reference）
   	Summary
   J2	R&D for Laser Processing Simulation Code with Laser Processing Experiment and Deployment of Sensing Technology
   	Tsuruga Center for International and Regional Collaboration	Applied Laser Technology Institute	Tsuruga Head Office	Toshiharu Muramatsu E-mail: muramatsu.toshiharu@jaea.go.jp	Non-Radiation Worker	Mechanics Material Applied Physics Computer and Information Measurements and Instruments Material
   	We are developing laser processing technologies for industrial applications. First, the development of simulation code named "SPLICE" should be advanced to improve the numerical turbulent model and to optimize the parameters. High power laser processing experiment is needed for quantitative analysis. New laser systems and several sensing technologies are required for structural health monitoring with multiple sensors. Heat resistant optical fiber sensor has been installed on the piping system of demo-plant. Data remote processing is needed for monitoring the integrity. ※Energy base-ization of research and development Fukui-ken advances, they're the research and development concerned with advance of laser improvement process simulation code SPLICE developed aiming at contribution to a plan, and I make them promote more prefecture use of SPLICE cable through an outcome of this case. All together, I aim at preservation optics in atomic energy and innovation of status monitoring.
   J5	Study on aging degradation of nuclear reactor structural materials under irradiation
   	Nuclear Safety Research Center	Materials and Water Chemistry Research Group	Tokai Research and Development Center Nuclear Science Research Institute	Yutaka Nishiyama Tel:+81-29-282-5044 E-mail: nishiyama.yutaka93@jaea.go.jp	Radiation Worker	Mechanics Material Measurements and Instruments
   	In the nuclear reactor structural materials used under irradiation, the material properties, the interface reactions with the coolant and the stress conditions etc. change simultaneously. They are important phenomena to evaluate the aging degradation of light water reactors. In this study, for ferritic steels and austenitic stainless steels used as the nuclear reactor structural materials, the changes in material and mechanical properties (such as microstructure, crack growth and fracture toughness etc.) induced by irradiation are investigated. From these results, the effects on the structural integrity of the reactor pressure vessels and the core internals are evaluated.
   J6	Experimental and analytical study on thermohydraulic safety of the light water reactor
   	Nuclear Safety Research Center	Thermohydraulic Safety Research Group	Tokai Research and Development Center Nuclear Science Research Institute	Taisuke Yonomoto Tel:+81-29-282-5263 E-mail: yonomoto.taisuke@jaea.go.jp	Non-Radiation Worker	Mechanics Measurements and Instruments Computer and Information
   	This experimental and analytical research focuses on thermo-hydraulic phenomena occurring in the reactor and the containment of the nuclear power plant during an accident before and after core damage. For the experimental study, two-phase flow and/or heat transfer are investigated using a high-pressure reactor simulation test facility or a small-scale test device that exits or will be built for this research. The development of the two-phase flow measurement technique is also an important topic for this research. By using the data obtained from the experiments, prediction models are validated and improved in order to be used in lumped parameter codes such as RELAP5 and MELCOR, or the CFD codes. A specific research topic will be selected considering the request by the applicant.
   J12	Study on the volcanic activity evaluation in a geological radioactive waste disposal
   	Nuclear Safety Research Center	Environmental Safety Research Group	Tokai Research and Development Center Nuclear Science Research Institute	Seiji Takeda Tel:+81-29-282-6170 E-mail: takeda.seiji@jaea.go.jp	Non-Radiation Worker	Applied Chemistry Physics Geo and Environemtal Sciences Measurements and Instruments
   	In a safety assessment of geological radioactive waste disposal, it is necessary to estimate the environmental impact at the site due to occurrence of natural phenomenon such as a volcanic activity, an earthquake and fault activity. In this theme, the research on the volcanic activity evaluation characterized by magma residence time, accumulated volume and temporal distribution of magma is conducted, in order to estimate the thermal and/or geochemical effects of a disposal site by a volcanic activity.
   J14	Nuclear reaction and structure study for exotic nuclei
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Heavy Element Nuclear Science	Tokai Research and Development Center Nuclear Science Research Institute	Katsuhisa Nishio Tel:+81-29-282-5454 E-mail: nishio.katsuhisa@jaea.go.jp	Radiation Worker	Physics Applied Physics Mathematics Measurements and Instruments Other
   	Experimental nuclear physics programs dedicated to exotic nuclei such as neutron-rich, proton-rich and super-heavy nuclei will be promoted. Challenge to find a new phenomenon in nuclear structure, nuclear reaction and fission processes will be highly encouraged. Experiments will be carrieod out using JAEA facility and also other facilities inside and outside Japan to produce exotic nuclei and unique states in nuclei. (http://asrc.jaea.go.jp/soshiki/gr/HENS-gr/index_e.html)
   J15	Chemical properties of superheavy elements
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Heavy Element Nuclear Science	Tokai Research and Development Center Nuclear Science Research Institute	Kazuaki Tsukada Tel:+81-29-282-5491 E-mail: tsukada.kazuaki@jaea.go.jp	Radiation Worker	Chemistry Physics Measurements and Instruments
   	The main objective is to understand chemical properties of superheavy elements (SHEs) placed at the uppermost end of the Periodic Table. This theme will focus on the valence electronic structure of SHEs that is experimentally evaluated from their redox potentials, ionic radii, and compound formations as well as the development of chemical analysis methods for SHEs on an "atom-at-a-time" basis. （http://asrc.jaea.go.jp/soshiki/gr/HENS-gr/nc/index-e.htm）
   J16	Physics and chemistry studies for superheavy elements by using slow superheavy-element beams
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Heavy Element Nuclear Science	Tokai Research and Development Center Nuclear Science Research Institute	Masato Asai Tel:+81-29-282-5490 E-mail: asai.masato@jaea.go.jp	Radiation Worker	Physics Chemistry Radiation Measurements and Instruments
   	Nuclear physics, nuclear chemistry, and atomic and molecular physics of superheavy elements are studied through developments of new methods utilizing slow superheavy-element beams. The research subjects are as follows: developments of superheavy-element-beam production and ion-guide techniques; ionization-energy measurements; nuclear-structure and fission studies using an on-line isotope separator; nuclear mass measurements; surface adsorption and molecular formation studies for superheavy elements. These developments and experiments are mainly performed at the JAEA Tandem Accelerator Facility.
   J21	Materials science research by using a muon beam
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Nanoscale Structure and Function of Advanced Materials	Tokai Research and Development Center Nuclear Science Research Institute	Wataru Higemoto Tel:+81-29-284-3873 E-mail: higemoto.wataru@jaea.go.jp	Radiation Worker	Physics Chemistry Material Applied Physics Applied Chemistry Measurements and Instruments
   	The applicant will be involved in materials science research by using accelerator-produced muons, which are implanted into a material and used as a sensitive local probe. In our group, the applicant will be able to use advanced muon beams, such as an ultra-slow muon beam in J-PARC, to investigate various functional materials. Instrumentation is also encouraged for the purpose. (http://asrc.jaea.go.jp/soshiki/gr/Nanoscale-gr/index.html)
   J23	Study on Accurate Neutron Cross Section Measurement
   	Nuclear Science and Engineering Center	Nuclear Data Center, Nuclear Data and Reactor Engineering Division	Tokai Research and Development Center Nuclear Science Research Institute	Atsushi Kimura Tel:+81-29-282-5796 E-mail: kimura.atsushi04@jaea.go.jp	Radiation Worker	Physics Measurements and Instruments
   	Accurate nuclear data for minor actinides (MAs) and long-lived fission products (LLFPs) are required for the development of nuclear transmutation systems, since present uncertainties are large. In order to decrease the uncertainties of the cross sections, we have been carrying out neutron-TOF experiments using ANNRI installed at BL04/MLF/J-PARC and other facilities. The assigned post-doc fellow is requested to perform one or more topics from; 1) Capture, fission and total cross-section measurements with neutron-TOF method, 2) Calculation of the detector weighting function in ANNRI, 3) Resonance analysis of the obtained cross sections.
   J26	Study on carbon cycling in terrestrial ecosystems and its interaction with environmental changes, using radioactive and stable carbon isotope analysis
   	Nuclear Science and Engineering Center	Research Group for Radiochemistry, Environment and Radiation Sciences Division	Tokai Research and Development Center Nuclear Science Research Institute	Dr. Jun Koarashi Tel:+81-29-282-5903 E-mail: koarashi.jun@jaea.go.jp	Non-Radiation Worker	Geo and Environmental Sciences Biology Chemistry Measurements and Instruments
   	There is growing concern that recent rapid changes in climate and environment could have a significant influence on carbon cycling in terrestrial ecosystems and could consequently lead to a positive feedback for global warming. However, the magnitude and timing of this effect remain highly uncertain due to a lack of quantitative understanding of the migration and storage processes of carbon in terrestrial ecosystems (especially forests) and their responses to the changes in environment. In this study, we will conduct field (with different ecosystem properties) and laboratory (under controlled environmental conditions) experiments to quantify the processes and their interactions with changes in environment, using radioactive (14C) and stable carbon isotopes as tracers for carbon cycling in terrestrial ecosystems.
   J27	Research and development of non-destructive analysis for nuclear materials.
   	Nuclear Science and Engineering Center	Research Group for Nuclear Sensing, Nuclear Data and Reactor Engineering Division	Tokai Research and Development Center Nuclear Science Research Institute	Yosuke Toh Tel:+81-29-282-6211 E-mail: toh.yosuke@jaea.go.jp	Radiation Worker	Measurements and Instruments Physics Radiation Applied Physics
   	Non-destructive analysis of nuclear materials is required in many fields, namely nuclear non-proliferation and nuclear security, nuclear decommissioning, nuclear transmutation and nuclear industry. In this research, non-destructive techniques of nuclear materials and long-lived radioisotopes, which are difficult to quantify by conventional methods, are developed by combining several method, such as neutron and gamma-ray detection and imaging techniques.
   J29	Research of fatigue evaluation method of target vessel for high-power spallation neutron source
   	Sector of Nuclear Science Research, J-PARC Center	Materials and Life Science Division Neutron Source Section	J-PARC	Eiichi Wakai Tel:+81-29-284-3745 E-mail: wakai.eiichi@jaea.go.jp	Radiation Worker	Material Mechanics Measurements and Instruments
   	In Materials and Life Science Experimental Facility (MLF) of J-PARC, it is required to develop the spallation neutron source for the stable operation at 1 MW proton beam power, and various researches of the mercury target vessel are performing by the quantitative evaluation method. In this theme, there are some research subjects as follows: (1) Study of the fatigue phenomenon and thermal stress in the mercury vessel induced by the pulsed proton beam, (2) The experimental technology R&D including the fatigue properties and the testing to improve and advance the evaluation method of life time estimation of the target vessel, (3) The related systematic studies of the spallation neutron source and the target vessel for the stable operation at 1 MW.
   J30	Study of Performance Improvement for the J-PARC Accelerators
   	Sector of Nuclear Science Research, J-PARC Center	Accelerator Division	J-PARC	Michikazu Kinsho Tel:81-29-284-3172 E-mail: kinsho.michikazu@jaea.go.jp	Radiation Worker	Physics Applied Physics Radiation Electricity and Electronics Measurements and Instruments
   	The goal of the J-PARC proton accelerators is to achieve stable beam operation at 1 MW. Beam loss reduction is crucial to increase beam power and to achieve stable operation. And also, long-lasting components are important for reliable operation. The subject of this theme is to study beam loss reduction for the J-PARC linac and/or 3 GeV Synchrotron (RCS). He/she will perform a study of beam diagnostics, beam loss handling and component development for stabler operation.
   J31	The experimental study to elucidate the relationship between functions and dynamics of bio-macromolecules using deuterated samples
   	Sector of Nuclear Science Research, J-PARC Center	Neutron Science Section Materials and Life Science Division	J-PARC	Kaoru Shibata Tel:+81-(0)29-284-3199 E-mail: shibata.kaoru@jaea.go.jp	Radiation Worker	Biology Chemistry Measurements and Instruments
   	By mainly using the inelastic and quasielastic scattering spectrometer DNA installed in J-PARC/MLF neutron facility, the corresponding researcher will perform the experimental study to investigate the relationship between functions and dynamics of bio-macromolecules, such as the molecular mechanisms of the functions of enzymatic proteins, using particularly the deuterated protein samples. Therefore, it will be given special importance that the corresponding researcher has the extensive experience of preparation of bio-macromolecules, especially proteins by using bacterial expression systems. The corresponding researcher will also be expected to perform the research assistance for the related research fields in addition to his/her own research.
   J32	Development of Neutron Detectors at Materials and Life Science Facility of J-PARC
   	Sector of Nuclear Science Research, J-PARC Center	Materials and Life Science Division Neutron Instrumentation Section	J-PARC	Kaoru Sakasai Tel:+81-29-284-3519 E-mail: sakasai.kaoru@jaea.go.jp	Radiation Worker	Radiation Measurements and Instruments Electricity and Electronics
   	The work of neutron instrumentation section focuses on development of various neutron detectors and neutron optical devices for Materials and Life Science Facility (MLF) of J-PARC. Construction of a new neutron diffractometer for analysis of large protein-crystals is now under planning at the MLF. The neutron detectors for the diffractometer are required to have high performances such as large sensitive area and high spatial resolution. The successful applicant will participate in the development of such detectors using scintillators.
   J33	Development of lead-bismuth spallation target
   	Sector of Nuclear Science Research, J-PARC Center	Nuclear Transmutation Division Target Technology Development Section	J-PARC	Toshinobu Sasa Tel:+81-29-282-5364 E-mail: sasa.toshinobu@jaea.go.jp	Non-Radiation Worker	Physics Material Measurements and Instruments Robotics Computer and Information
   	JAEA plans to build Transmutation Experimental Facility (TEF) to realize innvative accelerator-driven systen (ADS) for transmutation of long-lived radioactive nuclides. R&Ds to install a 250kW lead-bismuth spallation target in TEF for material irradiation, such as simulation of neutronic- and thermal-hydraulic performance, development of target components and instruments, and remote handling systems, will be performed.
   J34	Development and application of spin-contrast variation technique on structual study of complex materials using polarized neutron and polarized protons
   	Materials Sciences Research Center	Hierarchical Structure Research Group	Tokai Research and Development Center Nuclear Science Research Institute	Takayuki Kumada Tel:+81-29-284-3834 E-mail: kumada.takayuki@jaea.go.jp	Radiation Worker	Measurements and Instruments Physics Electricity and Electronics Mathematics Chemistry
   	Scattering power of protons against neutrons remarkably depends on relative direction of spins of the protons and neutrons. We have developed a dyanamic nuclear polarization system for the proton polarization of composite materials, and then carried out polarized neutron scattering study to determine detailed structure of the materials. We will extend this technique named spin contrast variation to deterimine nano-scale bulk and surface structures using small-angle scattering diffractometers and reflectrometers at the neutron facilities, JRR-3 and J-PARC.
   J36	Study of geological environment during construction, operation and closure of underground facility.
   	Tono Geoscience Center	Crystalline environment research group	Tono Geoscience Center	Teruki Iwatsuki E-mail: iwatsuki.teruki@jaea.go.jp	Non-Radiation Worker	Geo and Environemtal Sciences Chemistry Biology Chemical Engineering Measurements and Instruments Material
   	The construction, operation and closure of large underground facility changes hydraulic and hydrochemical condition around the facility. Such disturbance process and the recovery mechanism are still unclear. It is required to develop the observation and simulation methods for understanding of the phenomenon. Postdoctoral fellow studies the hydraulic and hydrogeochemical evolution (artificial disturbance and the recovery) process, impact of burial materials such as cement, clay in deep underground around Mizunami Underground Research Laboratory (MIU) during facility construction and after the closure by analyzing the rock, groundwater and burial materials, and previous data.
   F2	Development of evaluation method of dose rate distribution in primary containment vessel of the Fukushima Daiichi Nuclear Power Station
   	Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Sector of Fukushima Research and Development	Dose Evaluation and Nuclear Material Accountancy Group Fuel Debris Handling and Analysis Division	Tokai Research and Development Center (Nuclear Science Research Institute)	Keisuke Okumura Tel:+81-(0)29-282-5840 E-mail: okumura.keisuke@jaea.go.jp	Non-Radiation Worker	Physics Geo and Environemtal Sciences Measurements and Instruments
   	In order to contribute to planning of fuel debris retrieval, we develop the evaluation method of the most possible dose rate distribution in the primary containment vessel (PCV) by using information obtained from irradiation calculations of fuels and structural materials, severe accident analyses, local dose rate measurement in PCV with robots, and so on.
   F3	Research on severe accident progression behavior of the Fukushima Daiichi NPP accident
   	Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Sector of Fukushima Research and Development	Molten Core Behavior Analysis Group Severe Accident Propagation Behavior Evaluation Division	Tokai Research and Development Center (Nuclear Science Research Institute)	Toshio Nakagiri Tel:+81-(0)29-267-1919, Ex.5802 E-mail: nakagiri.toshio@jaea.go.jp	Non-Radiation Worker	Physics Chemistry Radiation Mechanics Material Measurements and Instruments Computer and Information
   	Analytical evaluation using SA codes (SCDAP, MELCOR, etc.) and 1F plant data are peroformed to enhance understanding on accident progression behavior in the Fukushima Daiichi NPP. In this theme, evaluation of 1F plant data with SA code analysis will be conducted and possibility of model improvement will be considered where appropriate.
   F4	Research on the degradation behavior of fuel assemblies in Fukushima Daiichi NPP accident condition
   	Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Sector of Fukushima Research and Development	Molten Core Behavior Analysis Group Severe Accident Propagation Behavior Evaluation Division	Tokai Research and Development Center (Nuclear Science Research Institute)	Toshio Nakagiri Tel:+81-(0)29-267-1919, Ex.5802 E-mail: nakagiri.toshio@jaea.go.jp	Non-Radiation Worker	Physics Chemistry Mechanics Material Measurements and Instruments
   	Present knowledge on reaction behavior of the fuel assembly materials (control blade, fuel rod, channel box) is insufficient to understand degradation behavior of fuel asseblies in the Fukushima Daiichi NPP accident. In this theme, laboratory scale experiments on reaction behavior of fuel assembly materials, large scale experiments on the degradation behavior of fuel assemblies and development of individual reaction models will be performed.
   F6	R&Ds on Radiation Imaging Technologies under High-dose Environments
   	Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Sector of Fukushima Research and Development	Radiation Imaging and Instrument Group Remote System and Sensing Technology Division	Tokai Research and Development Center (Nuclear Science Research Institute) or Tomioka International Collaborative Research Building (now under constructing)	Jun Saegusa Tel:+81-(0)29-282-6144 E-mail: saegusa.jun@jaea.go.jp	Radiation Worker	Physics Radiation Computer and Information Electricity and Electronics Applied Physics Measurements and Instruments
   	For the decommissioning of TEPCO Fukushima Daiichi Nuclear Power Plants, gamma-ray detectors that can estimate the position, shape and nuclide distributions of residual debris are to be developed. In particular, a prototype detection system consisting of two-dimensional-gamma-imaging units and compact scintillator crystals is developed for the application to fuel debris measurements, and response characteristics of each element to gamma-rays are evaluated. In addition, a compact/lightweight gamma-camera is to be manufactured for the evaluation of its detection capability to radioactive materials and of durability against radiations. An unmanned remote radiation measurement system for the imaging of the radioactivity distribution in the Fukushima reactor building are also to be developed.
   F7	R&Ds on Image Processing Technologies for Radiation Measurement Data on Reactor Decommissioning
   	Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Sector of Fukushima Research and Development	Radiation Imaging and Instrument Group Remote System and Sensing Technology Division	Tokai Research and Development Center (Nuclear Science Research Institute) or Tomioka International Collaborative Research Building (now under constructing)	Jun Saegusa Tel:+81-(0)29-282-6144 E-mail: saegusa.jun@jaea.go.jp	Non-Radiation Worker	Computer and Information Radiation Physics Mathematics Applied Physics Measurements and Instruments
   	Towards the planned removal of fuel debris from the TEPCO Fukushima Daiichi Nuclear Power Plants in 2021, reduction of radiation doses to workers and countermeasures against the spreading of radioactive contaminations are essential. For the purpose, three-dimensional visualization (mapping) of dose rates and radionuclide distributions are required as well as the real time monitoring of dose rates in the reactor building. So far, developments on radiation measurement techniques in the Fukushima Daiichi NPPs are in progress, and results obtained from these developments are to be visualized by the proposed R&Ds. Especially, developments of the algorithm for the three-dimensional image reconstruction is to be performed.
   F9	Research for 3D visualization of environmental radiation distribution
   	Sector of Fukushima Research and Development, Fukushima Environmental Safety center	Fukushima Radiation measurement Group,	Minami-soma(Environmental Radiation Monitoring Centre)	Yukihisa Sanada Tel:+81-244-25-2072 E-mail: sanada.yukihisa@jaea.go.jp	Non-Radiation Worker	Physics Geo and Environemtal Sciences Measurements and Instruments
   	In FukushimaEnvironmental radiation monitoring centre, radiation monitoring system using unmanned vehicle was developed for environmental radiation monitoring. We recruit a postdoctoral fellow who can demonstrate his/her ability for development of 3D tecqnique of visualization results of environmental radiation monitoring based on image reconstruction tecqnique using PET. So, it is desirable that applicants have knowledge of a radiation and the computer language.
   F10	Research on the chemical form of radioactive material in the environment and its dissolution within environmental water systems by use of solid analysis techniques
   	Sector of Fukushima Research and Development Fukushima Environmetal Safety Center	Fukushima Environmental Restoration Group	Fukushima(Miharu)	Kazuki Iijima Tel:+81-：247-61-2913 E-mail: iijima.kazuki@jaea.go.jp	Non-Radiation Worker	Chemistry Geo and Environemtal Sciences Material Measurements and Instruments
   	The radioactive cesium deposited on the land surface of Fukushima exists mostly in forests and small portions of it discharge each year into the ocean through river systems. The dissolved form of radioactive cesium migrates most easily within the eco-system. Although dissolved radiocesium concentrations are low, it is still detected in stemflow and riverflows, and this fact is considered to be the reason for the existence of freshwater fish and mushrooms with high radioactive cesium concentration. In order to predict the future behaviour of radioactive cesium in the eco-system, it is necessary to clarify the chemical form of radioactive cesium in the forest and the mechanism by which it dissolves. In this research program, we will try to uncover these issues by utilizing solid analysis instruments such as TEM, EPMA, FIB, XPS, etc., installed in the Fukushima Environmental Creation Center.
   F12	High-energy gamma-rays accompanied by fission
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Heavy Element Nuclear Science	Tokai Research and Development Center Nuclear Science Rsearch Institute	Dr. Katsuhisa Nishio Tel:+81-29-282-5454 E-mail: nishio.katsuhisa@jaea.go.jp	Radiation Worker	Physics Radiation Measurements and Instruments Applied Physics Computer and Information
   	Measurement of high-energy gamma-rays accompanied by fission will be carried out, and the mechanism of this radiation will be investigated. The main goal is to use this radiactivity to monitor the criticality of nuclear fuel debris of damaged Fukushima atomic power plants, which is necessary in the process of decommissioning. An experiment will be carried out using neutron beam supplied by a research reactor. Fission study is also the scope of this program using heavy-ion beams and and photons.