A5061286096- Nuclear Physics and Applications
- Graphite, nuclear technology, radiation studies
- Nuclear reactor physics and engineering
- Particle accelerators and beam dynamics
- Radioactive contamination and transfer
- Superconducting Materials and Applications
- Nuclear and radioactivity studies
- Radiation Detection and Scintillator Technologies
- Radiation Therapy and Dosimetry
- Groundwater flow and contamination studies
- Muon and positron interactions and applications
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Neutrino Physics Research
- Radioactivity and Radon Measurements
- Groundwater and Isotope Geochemistry
- Chemical Synthesis and Characterization
- Surfactants and Colloidal Systems
- Radioactive element chemistry and processing
- Fecal contamination and water quality
- Microfluidic and Capillary Electrophoresis Applications
- Non-Destructive Testing Techniques
- Astrophysics and Cosmic Phenomena
- Analytical Chemistry and Chromatography
- Fusion materials and technologies
Japan Medical Association
2024
High Energy Accelerator Research Organization
2009-2022
Japan Proton Accelerator Research Complex
2015-2021
Paul Scherrer Institute
2008
Tohoku University
1994-1997
Mixtures of the protic ionic liquids trioctylammonium bis(trifluoromethanesulfonyl)amide ([TOAH][NTf2]) and nitrate ([TOAH][NO3]) were investigated as extractants for platinum-group elements. The mixture 10 wt % [TOAH][NO3] in [TOAH][NTf2] has low viscosity (274.2 mPa s) aqueous solubility (2.6 × 10–5 mol dm–3 cation). With liquid mixture, Pd(II) Pt(IV) extracted almost quantitatively from 0.10 hydrochloric acid. Under same conditions, Na(I), Mg(II), K(I), Ca(II), Mn(II), Fe(III), Co(II),...
The adsorption behavior of Be(II) on CuO nanoparticles dispersed in water was studied as a model for colloid formation radioactive 7Be nuclides the cooling used electromagnets at high-energy proton accelerator facilities. An aqueous solution and commercially available were mixed, quantitatively examined. From detailed analysis data measured function pH, it confirmed that is adsorbed by complex with hydroxyl groups surface (>S-OH) according to following equation: S-OH + Be ⇌ (>S–O) H ( = 2,...
Accelerator mass spectrometry (AMS) was applied to the analysis of 36 Cl induced in concrete samples obtained from accelerator facilities. In order use a small amount sample and separate chlorine as pure possible, an improvement separation process developped. Chlorine extracted 1–5 g into 0.01 M nitric acid pressurized decomposition vessel. After determining using ion chromatography, certain NaCl solution added obtain sufficient amounts AgCl precipitate dilute suitable isotope ratio 35 ( Cl/...
At the 120-GeV proton accelerator facilities of Fermilab, USA, water samples were collected from cooling systems for target, magnetic horn1, horn2, decay pipe, and hadron absorber at NuMI beamline as well collection lens, pulse magnet collimator, beam antiproton production target station, just after shutdown accelerators a maintenance period.Specific activities γ-emitting radionuclides 3 H in these determined using high-purity germanium detectors liquid scintillation counter.The contained...
The beam power in a new project of long-baseline neutrino oscillation experiment from Tokai to Kamioka (the T2K experiment) will be approximately 100 times higher than that substantial the High Energy Accelerator Research Organization (KEK) K2K experiment). In experiment, radionuclides at serious activity levels produced target, magnetic horns, and partially dissolved into cooling water. Radionuclides also Therefore, we measured total distribution 7Be, 22Na, 54Mn, 57Co, 60Co, 88Y, 101gRh,...
The evaluation of radioactivity induced in the concrete shield is important for decommissioning accelerator facilities. Specific activities gamma-ray emitters nuclear spallation products and thermal neutron capture beta-ray such as tritium 14C, 36Cl along 12-GeV proton beam line (EP1 line, High Energy Accelerator Research Organization) were determined. depth profiles each nuclide 6-m-thick lines compared, secondary particles reactions discussed.
Radioactive trace 7Be produced in cooling water systems for high-energy accelerators is known to be captured by metal-oxide colloidal nanoparticles generated through corrosion of metal components water. This study aimed at investigating the adsorption behavior Be2+ onto various oxide (Al2O3, SiO2, TiO2, Fe2O3, CoO, and CuO) dispersed 25 °C order clarify tendency features interaction with oxides. From pH dependence distribution ratio between nanoparticle phase aqueous solution phase, surface...
Jkij"Gpgti{"Ceegngtcvqt"Tgugctej"Qticpk|cvkqp"*MGM+."3/3"Qjq."Vuwmwdc."Kdctcmk"527/2:23"Lcrcp" 2 M{qvq"Wpkxgtukv{"Tgugctej"Tgcevqt"Kpuvkvwvg."Mwocvqtk/ejq"Ugppcp/iwp"Qucmc"7;2/26;6."Lcrcp"3 Lcrcp"Cvqoke"Gpgti{"Cigpe{."4/6"Ujktcmcvc"Ujktcpg."Vqmck/owtc."Kdctcmk"53;/33;7"Lcrcp" 4Ujkok|w"Eqtrqtcvkqp."6/39."Gvejwlkoc"5/ejqog."Mqvq/mw."Vqm{q"357/:752."Lcrcp" 5 Hgtok"Pcvkqpcn"Ceegngtcvqt"Ncdqtcvqt{."Hgtokncd."Dcvcxkc."KN"82732/7233."WUC"" Radionuclide dissolution and radio-colloid formation in...