A5101599201- Photocathodes and Microchannel Plates
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- Electron and X-Ray Spectroscopy Techniques
- Dark Matter and Cosmic Phenomena
- Semiconductor Quantum Structures and Devices
- Radiation Therapy and Dosimetry
- Advanced Optical Network Technologies
- Particle Detector Development and Performance
- Nuclear Physics and Applications
- Optical Network Technologies
- Quantum and electron transport phenomena
- Gyrotron and Vacuum Electronics Research
- Advanced Photonic Communication Systems
- Advanced X-ray Imaging Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Particle accelerators and beam dynamics
- Wireless Networks and Protocols
- Superconducting Materials and Applications
- Indoor and Outdoor Localization Technologies
- Cryptography and Data Security
- High-Energy Particle Collisions Research
- Plasma Diagnostics and Applications
Tohoku Medical and Pharmaceutical University Wakabayashi Hospital
2022
Yokohama City Seibu Hospital
2022
St. Marianna University School of Medicine
2022
Tohoku Medical and Pharmaceutical University
2022
Osaka University
2022
The University of Tokyo
2016-2021
Tohoku Medical and Pharmaceutical University Hospital
2018
Okayama University
2004-2013
Nagoya University
2002-2012
Kyushu University
2003-2012
A spin-polarized electron beam has been used as the probe in a transmission microscope by using photocathode gun with made of GaAs–GaAsP strained superlattice semiconductor negative affinity (NEA) surface. This system had spatial resolution order 1 nm for at 30 keV and it can generate an energy width 0.24 eV without employing monochromators. narrow suggests that NEA realize high energy-loss spectroscopy longitudinal coherence 3 × 10−7 m.
GaAs–GaAsP and InGaAs–AlGaAs strained-layer superlattice photocathodes are presented as emission sources for highly polarized electron beams. The cathode achieved a maximum polarization of 92(±6)% with quantum efficiency 0.5%, while the provides higher (0.7%) but lower [77(±5)%]. Criteria achieving high using discussed based on experimental spin-resolved spectra.
We propose a system of functional relations having universal form connected to the [Formula: see text] Bethe ansatz equation. Based on analysis it, we conjecture new sum formula for Rogers dilogarithm function in terms scaling dimensions parafermion conformal field theory.
The wireless LAN(Wi-Fi) infrastructure is widely used and many location-aware systems services are researched.In this paper, LAN based indoor positioning system WiPS proposed.WiPS uses technology to measure the location of each mobile terminal.Mobile terminals equip only device communicate its location, so it can be made without any additional devices for sensing.Existing signal strength by access points.On WiPS, terminal also measures neighboring terminals.Thereby achieve more precise...
We have observed a large enhancement of the spin polarization electrons extracted from an AlGaAs-GaAs superlattice illuminated by circularly polarized light. A 71.2 \ifmmode\pm\else\textpm\fi{}1.1(stat)\ifmmode\pm\else\textpm\fi{}6.1(sys)% was obtained with photon wavelength 802 nm at room temperature. also confirmed removal degeneracy between heavy-hole band and light-hole \ensuremath{\Gamma} point laser-wavelength dependence polarization.
We have investigated thermal strain effects on excitons in CuI thin films with a thickness of 10--3000 nm grown by vacuum evaporation onto (0001) ${\mathrm{Al}}_{2}{\mathrm{O}}_{3},$ fused silica (quartz), and (001) NaCl substrates. The x-ray-diffraction patterns indicate that the crystalline film every substrate is preferentially oriented along $〈111〉$ crystal axis. All absorption spectra for 10--100 clearly show doublet structure heavy-hole light-hole which are degenerate under strain-free...
Optic neuritis (ON) is a common manifestation of aquaporin-4 (AQP4) antibody seropositive neuromyelitis optica (NMO). The extent tissue damage frequently severe, often leading to loss visual function, and there no curative treatment for this condition. To develop novel therapeutic strategy, elucidating the underlying pathological mechanism using clinically relevant experimental ON model necessary. However, previous animal models have only resulted in mild lesions with limited functional...
In order to study spin related phenomena in nano-size materials, spin-polarized electron source (PES) has been employed for the incident beam transmission microscope (TEM). The PES designed and constructed with optimizing TEM. illuminating system of TEM is also focus emitted from a semiconductor photocathode negative affinity (NEA) surface. energy set below 40 keV which lower type as TEM, because interaction condensed matters very small corresponding Coulomb interaction. polarized gun...