Yasufumi OGURI

Nanostructured electrodes for amino acid detection Wearable and Implantable Sensors and Electrochemical Devices

M. Zelsmann, Yasufumi OGURI, Chloé Aymard, Thomas Lecourt et autres

International audience

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FT-IR measurement on the damage of Japanese paper induced by PIXE analysis

Yasufumi OGURI, Jun Hasegawa, Hitoshi Fukuda, Naoto Hagura

Analysis of cultural heritage samples by PIXE involves the risk of damaging precious samples due to MeV-proton irradiation. To investigate appropriate methods to detect invisible damage due to PIXE analysis, we analyzed the change in chemical bonding of the sample surface subjected …

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PIXE analysis of concrete composition in a research reactor facility under decommissioning

Naoto Hagura, Koichi Kashimata, K. Mochiki, Yasufumi OGURI

This study conducted an evaluation of elemental composition of concrete in an old nuclear reactor facility using the particle-induced X-ray emission (PIXE) technique. Given that the physical volume of the concrete is huge, easy, and quick analysis of many samples via the …

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Roles of Solar Energetic Particles in Production of Bioorganic Compounds in Primitive Earth Atmosphere

Kensei Kobayashi, Ryosuke Aoki, Yoko Kebukawa, Hajime Shibata et autres

Evaluation of the X‐ray distribution of a syringe‐needle type proton‐induced X‐ray source by Geant4 simulation

Y. Hu, Hitoshi Fukuda, Yasufumi OGURI

The accelerator‐based syringe needle‐type proton‐induced X‐ray source, which was proposed by the authors in 2013 as an alternative for prostate cancer brachytherapy, has an essential issue in that its dose distribution is affected by many factors, such as the structure of the …

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OBSERVATION OF SCINTILLATION LIGHT SPOTS FOR 20keV H⁻ ION BEAMS USING GLASS VIEWER AND DIGITAL CAMERA AND MEASUREMENT OF BEAM PROFILES USING FREEWARE IMAGEJ

Naoto Hagura, K. Sakamoto, Yukitaka Kato, Jun Kawarabayashi et autres

Direct observation of dose distribution around a syringe-needle type proton-induced X-ray source using liquid scintillator and a CCD camera

Y. Hu, Kotaro Kondo, Y. Mizushiro, Yasufumi OGURI et autres

This paper discusses a method to directly observe the dose distribution around a syringe-needle-type proton-induced monochromatic X-ray source proposed to avoid the risk that could exist in conventional brachytherapy. Images taken by using liquid scintillator and a high sensitivity CCD camera are …

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A Methodology for Student Formula Program in Engineering Education: By Applying the P2M

Akihito Okazaki, Yasufumi OGURI, Hiroshi Miyake

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153 Turbo-compound System for Small-seized Gasoline Engine : 2nd report System Design

Akihito OKAZAKI, Yasufumi OGURI

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Effect of Vacuum Drying in Target Preparation from Potassium Hydroxide Solution on the Spectra of Rutherford Backscattering Spectroscopy

Tamotsu TORIYAMA, Sayaka Suzuki, Koji Kawasaki, Yasuo Takagi et autres

In order to measure the amounts of fluorine (F) atoms in the off-gas drain from polymer electrolyte fuel cells (PEFCs) using proton Rutherford Backscattering Spectroscopy (p-RBS), we used an impinger where potassium hydroxide (KOH) solution (0.1 mol/L) was filled and prepared the …

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Numerical Analysis of the Hydrodynamic Behavior of Ion-beam-heated Uranium Targets for Equation-of-state Studies under Extreme Conditions

Yasufumi OGURI, Kotaro Kondo, Jun Hasegawa, Kazuhiko Horioka

The equation of state (EOS) of fissile materials under extreme thermodynamic conditions is of great importance to assess the safety of nuclear energy systems related to extremely severe nuclear accidents and intentional nuclear terrorism. In this study, for a simple, safe, and …

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Design of a Proton-induced Quasimonochromatic Micro-XRF Setup for Wet Biological Samples

Kamontip Ploykrachang, Jun Hasegawa, Kotaro Kondo, Hitoshi Fukuda et autres

We designed and constructed a proton-induced quasimonochromatic micro-XRF system for wet biological samples. A horizontal beam of MeV protons delivered by a 1.6 MV tandem accelerator was bent downward by 45° using a dipole magnet. A copper (Cu) foil target was placed …

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