A5021508970- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Silicon and Solar Cell Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- Semiconductor materials and devices
- Ion-surface interactions and analysis
- X-ray Spectroscopy and Fluorescence Analysis
- Semiconductor materials and interfaces
- Muon and positron interactions and applications
- Reproductive biology and impacts on aquatic species
- Advanced X-ray Imaging Techniques
- Fish Ecology and Management Studies
- Particle accelerators and beam dynamics
- 3D IC and TSV technologies
- Aquaculture Nutrition and Growth
- Electron and X-Ray Spectroscopy Techniques
- Fusion materials and technologies
- Crystallography and Radiation Phenomena
- Electronic Packaging and Soldering Technologies
- Environmental DNA in Biodiversity Studies
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Invertebrate Ecology and Behavior
- Advancements in Battery Materials
- Advanced Electron Microscopy Techniques and Applications
Tokai University
1997-2021
Japan Atomic Energy Agency
2015
NEC (Japan)
1991-2007
Shimizu (Japan)
1999
Nippon Electric Glass (Japan)
1975-1977
A new X-ray topographic method is described which images with similar contrast those parts have the same lattice spacings in an inhomogeneous single-crystal irrespective of inclination. This was applied to GaAs, a variation Δd/d ≲ 10−5 topographically resolved.
Lattice relaxation at the Se DX center in Al0.38Ga0.62As was determined by extended x-ray absorption fine structure (EXAFS). During EXAFS measurements deep and shallow (metastable) states of were prepared resultant difference nearest-neighbor distance around between two electronic found to be quite small (less than 0.04 Å). The result is indicative lattice center.
During the EVEDA (engineering validation and engineering design activities) phase of International Fusion Materials Irradiation Facility (IFMIF) project, a 125 mA/9 MeV linear prototype accelerator (LIPAc) has to be built, tested operated in Rokkasho-mura (Japan). Involved this project for several years, CEA-Saclay designed injector which is composed an electron cyclotron resonance ion source, delivering 140 mA deuteron beam at 100 keV, low energy transport (LEBT) line match injection into...
Contrast formation mechanism around the cell walls in equi-lattice-spacing mapping X-ray topographs for an undoped GaAs wafer is analyzed reciprocal space. Reversal of contrast between interiors and explained by considering different mechanisms, due to dynamical diffraction kinematical diffraction. Der Kontrastbildungsmechanismus um die Zellenwände mit gleichen Abständen gerasterten Röntgen-Topographien für undotierte GaAs-Wafer wird im reziproken Raum analysiert. Kontrastumkehr zwischen dem...
We investigated pMOSFET Bias-Temperature (BT) degradation by using carrier separation analysis. Electrons tunneling from gate electrode to substrate were found cause impact ionization at the SiO/sub 2//Si interface and result in creation of trapped charges states. A higher-concentration boron incorporation into 2/ film was suppress BT degradation. This is considered be a electron current suppression. Degradation due can also suppressed reducing electric field oxide between drain. In other...
Deformation of the spot an off-axis Gaussian beam after passing through a lens-like glass fiber (SELFOC®) with fourth-order aberration is investigated by using first-order perturbation theory and numerical calculation. A method for determining coefficient proposed. By this method, it found that SELFOC sample (0.5 mm in diameter 150 length) has <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">h</tex> about 1.1, if dielectric constant meridional...
The objective of linear IFMIF prototype accelerator is to demonstrate 125 mA/CW deuterium ion beam acceleration up 9 MeV. injector has been developed in CEA Saclay and already demonstrated 140 mA/100 keV [R. Gobin et al., Rev. Sci. Instrum. 85, 02A918 (2014)]. was disassembled delivered the International Fusion Energy Research Center Rokkasho, Japan. After reassembling injector, commissioning started 2014. Up now, 100 keV/120 hydrogen keV/90 beams have produced stably from a 10 mm diameter...
Ion species ratio of high current positive hydrogen/deuterium ion beams extracted from an electron-cyclotron-resonance source for International Fusion Materials Irradiation Facility accelerator was measured by the Doppler shift Balmer-α line spectroscopy. The proton (H+) at middle low energy beam transport reached 80% hydrogen extraction 100 keV/160 mA and deuteron (D+) 75% deuterium keV/113 mA. It is found that H+ spectroscopy gives lower than derived phase-space diagram Allison scanner...
A series of normal stages for the embryonic development ice goby (shiro-uo), Leucopsarion petersii, which belongs to Perciformes, is described. Stages are based on morphological features, by utilizing optical transparency live embryos from first cleavage hatching stage. Fertilized eggs were obtained artificial insemination and embryogenesis was accomplished in a defined medium plastic petri dishes at 19°C. Shiro-uo surrounded very thin clear chorion could be dechorionated with forceps...
We report electrically detected magnetic resonance (EDMR) measurements on planar Si pn junctions which were isolated via local oxidation of silicon (LOCOS). The investigations the as-fabricated diodes show presence various defects. observe Pb centers at boundary to LOCOS isolation and an isotropic dangling bond related signal is assumed be a consequence ion implantation. E′H center—a hydrogen-complexed oxygen vacancy in SiO2 device isolation—is also EDMR. EDMR detection mechanism, based...
The highly diverse Perciformes are the most numerous and advanced group of teleosts, but experimental embryology has almost completely neglected them. ice goby (shiro-uo), Leucopsarion petersii, deserves attention as a useful species for this purpose. It is readily available commercially from fishermen, their mature adults can be easily kept bred in laboratory. Its totally transparent eggs embryos develop swiftly under simple culture conditions. Cleavage finished 17 hr at 20°C organs...
The Radio Frequency Quadrupole (RFQ) linac and 1.6 MW RF power system of the Linear IFMIF Prototype Accelerator (LIPAc) facility in International Fusion Energy Research Center (IFERC) Rokkasho (Japan) has been installed conditioned. During assembly tuning process, RFQ cavity was protected with a temporary tent from potential deterioration performance caused by dust. vacuum improved through 100°C baking process cavity. high test 175 MHz systems up to 200 kW CW for each eight chains performed...
Abstract Nonlethal DNA sampling is a highly recommendable method in molecular genetic studies of protected and endangered species. To develop demonstrably nonlethal obtaining from larvae diving beetles ( C ybister brevis , . lewisianus limbatus rugosus D ytiscus sharpi validus ), we obtained the larval exuvia (molted skin) these under laboratory conditions. A single 24 h after molting was sufficient to allow polymerase chain reaction PCR ) detection mitochondrial gene, cytochrome‐c oxidase...
X-ray topography using extremely asymmetric diffraction under the specular reflection condition is effective for imaging a short-range strain field near surface. This experimental easily realized by utilizing tunability of synchrotron radiation. The surface defect images are clearly observed as result reduction background due to dynamical from highly perfect bulk crystal.
The s.a.w. reflection coefficient of the metal strip has been measured on y-cut LiNbO3 for waves reflected through 90° from z into x direction. maximum value a is 0.020, when width/periodicity ratio strips about 0.3.
Using the extended x-ray absorption fine structure method, we have studied local structures around Zn atoms in Zn-doped GaAs crystal grown by liquid-encapsulated Czochralski technique. atoms, whose concentration is about 2.4×1018 cm−3, first nearest neighbor at a very short distance of 1.95 Å and second 3.15 Å. The atom configuration forms ‘‘interstitialcy’’, not substitutional, tetrahedral, or hexagonal sites. As increases, however, tendency to occupy substitutional
As for the evaluation method of motion picture compression, International Telecommunication Union has issued some technical Recommendation. However, tendency Recommendation doesn't penetrate into telemedicine field to perform a remote medical diagnosis. Roughly, there are two kinds classification about subject and objective evaluation. The that ITU recommended shall be performed only with eyes users. In general, when compressed discrete consine transform, stream is consisted by each frame...
Adhesion tests for a real Cu/low-k patterned structure were studied 45-nm node devices. Results from 4 point-bending (4PB) and modified edge lift-off (m-ELT) compared. Cu dual damascene interconnects structures with stacked hybrid low-k which is porous-poly-arylene(p-PAr)/porous-SiOC(p-SiOC) (k=2.3/2.3) evaluated. Peel-off occurred in different locations the subjected to m-ELT test 4PB test. In addition, adhesion energy (Gc: interface fracture energy) of peeled-off interfaces was improved...
イシガイ科の淡水二枚貝6種（ヨコハマシジラガイInversiunio jokohamensis，イケチョウガイHyriopsis schlegeli，マツカサガイPronodularia japanensis，カラスガイCristaria plicata，ドブガイモドキCristaria tenuis，ドブガイ類Sinanodonta sp.）の塩分耐性を実験水槽内で調べた。 まず，各種成貝の塩分耐性を判断するために，様々な塩分に調整した水槽に各種成貝を種別に収容して，経時的に生残率を記録した。様々な塩分に保った飼育水にヨコハマシジラガイの成貝を収容したところ，6 psu以上の環境下では全ての個体が斃死した。低い塩分（3～6 psu）の飼育水に各種成貝を収容してから，徐々に塩分を上昇させたところ，6～8 psuの時点でヨコハマシジラガイとイケチョウガイ，ドブガイモドキ，ドブガイ類は，ほとんど全ての個体が斃死した。生存個体のあったマツカサガイとカラスガイは，さらに塩分を10 psuまで上昇させたところ，全ての個体が斃死した。...