A5083338716- Advanced Chemical Physics Studies
- Mass Spectrometry Techniques and Applications
- Laser-Matter Interactions and Applications
- Advanced Frequency and Time Standards
- Quantum, superfluid, helium dynamics
- Advancements in Solid Oxide Fuel Cells
- Semiconductor materials and devices
- Spectroscopy and Quantum Chemical Studies
- Particle accelerators and beam dynamics
- Muon and positron interactions and applications
- Atomic and Molecular Physics
- Nanowire Synthesis and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Advancements in Semiconductor Devices and Circuit Design
- Catalysis and Oxidation Reactions
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Surface and Thin Film Phenomena
- Rocket and propulsion systems research
- Catalysts for Methane Reforming
- Combustion and flame dynamics
- Electrocatalysts for Energy Conversion
- Atomic and Subatomic Physics Research
- Nuclear Engineering Thermal-Hydraulics
- Laser Design and Applications
The University of Tokyo
2020-2024
Tokyo University of the Arts
2022
RIKEN Nishina Center
2022
High Energy Accelerator Research Organization
2021
Kyoto University
1996-2021
Toyo Seikan (Japan)
2012
Mitsubishi Materials (Japan)
2002-2010
Nagoya University
2010
Japan Science and Technology Agency
2010
Ultrafast photoelectron imaging using a 90 nm vacuum-UV probe pulse is applied to the ring-opening reaction of 1,3-cyclohexadiene (CHD) in gas phase, and formation 1,3,5-hexatriene (HT) CHD their electronic ground states observed real time. The analysis transient kinetic energy spectra reveals branching ratio into HT as 3:7 upon 270 photoexcitation. reasonable agreement with experimental values reported for liquid phase theoretical resolving discrepancy.
Abstract We report on the first production of an antihydrogen beam by charge exchange 6.1 keV antiprotons with a cloud positronium in GBAR experiment at CERN. The 100 antiproton delivered AD/ELENA facility was further decelerated pulsed drift tube. A 9 MeV electron from linear accelerator produced low energy positron beam. positrons were accumulated set two Penning–Malmberg traps. target resulted conversion extracted steered onto this to produce antiatoms. observe excess over background...
We demonstrated an automated passive-transmission-line routing tool for single-flux-quantum (SFQ) circuits. The is based on the A* algorithm, which widely used in CMOS LSI design, and tuned microstrip/strip lines formed SRL 4-Nb layer structure. In large-scale SFQ circuits with 10000-20000 Josephson junctions, such as microprocessors, 80-90% of wires can be automatically routed about ten minutes. verified correct operation above 40GHz 4 × switch circuit from on-chip high-speed tests....
The dynamics of ${\mathrm{CO}}_{2}$ excited into Rydberg states lying 0.2 eV below the ionization threshold is studied by means time resolved photoelectron imaging. Over 3 broad spectra are measured for all pump-probe delay times. Quantum mechanical calculations demonstrate that spectral broadening due to ultrafast electronic relaxation and identify likely pathways. Experiment theory bracket between 15 65 fs. A weak independent signal attributed trapped in near-threshold triplet states.
The electrical characteristics of wafer-bonded non-doped germanium-on-insulator (GOI) substrates were investigated using a four-point-probe pseudo-metal–oxide–semiconductor field-effect transistor. Annealing the GOI in vacuum strongly influenced their characteristics. samples annealed at temperatures below 500 °C exhibited n-channel depletion transistor operation, whereas between 550 and 600 p-channel operation. carrier mobility depended on sweep direction gate voltage; this characteristic...
Isomerization of tetramethylethylene (TME) following ultrafast internal conversion was investigated using time-resolved photoelectron spectroscopy with vacuum-ultraviolet probe pulses. The difference spectrum at τ = 15 ps reasonably well reproduced a linear combination static spectra TME and its isomers. isomers were produced as consequence unimolecular reaction vibrationally hot TME, created by from the excited state.
The electrical characteristics of wafer-bonded non-doped germanium-on-insulator (GOI) substrates were investigated using a four-point-probe pseudo-metal–oxide–semiconductor field-effect transistor. Annealing the GOI in vacuum strongly influenced their characteristics. samples annealed at temperatures below 500 °C exhibited n-channel depletion transistor operation, whereas between 550 and 600 p-channel operation. carrier mobility depended on sweep direction gate voltage; this characteristic...
Abstract We present pump–probe photoelectron spectroscopy of Kr and NO using a high-power vacuum-ultraviolet (VUV) laser at wavelength 90 nm. Clear quantum beats are observed in the angular distributions as well yields, resulting from coherent excitation two Rydberg states by VUV pump. The entire Franck–Condon envelope A( 2 Σ + ) excited state is also successfully captured probe.
Abstract In recent times, research on highly efficient construction has gained increasing popularity. During with hydraulic excavators, the sequence of excavation motions significantly affects duration and precision work; therefore, it should be as possible. Because automation is still difficult, ability improvement support system nonskilled operators required. However, currently, there exists no effective method for evaluating or planning motion sequence. This study proposes a sequences...
Capturing diversity of non-dominated and dominated solutions in decision space is important for realworld multiobjective optimization to provide a maker many options. This paper studies how different crossover operators affect obtained by evolutionary algorithms (MOEA). We compare the NSGA-II with simulated binary (SBX), unimodal normally distributed (UNDX), reproduction process differential evolution (DE), or blend (BLX-α) speed reducer design (SRD) problem Mazda problem. The result shows...
Mitsubishi Materials Corporation and The Kansai Electric Power Co., Inc. are developing highly efficient units based on intermediate-temperature solid oxide fuel cells for stationary power generation applications. use of high ion conducting electrolyte made up strontium, magnesium cobalt doped lanthanum gallate (LSGMC) help realize the operation between 600{degree sign}C 800{degree sign}C. An improved 10 kW-class CHP system LSGMC was subjected to a second time long term stability test over...
The Kansai Electric Power Co., Inc. (KEPCO) and Mitsubishi Materials Corporation (MMC) have been jointly developing disk-type intermediate temperature solid oxide fuel cells (IT-SOFC) with lanthanum gallate-based electrolyte, since FY 2001. As of FY2004, 10 kW-class modules a CHP system were developed under project supported by New Energy Industrial Technology Development Organization (NEDO). In 2006, using town gas as was manufactured the performance test carried out. And first long-term...
The Kansai Electric Power Company, Inc. and Mitsubishi Materials Corporation started a joint research project for developing intermediate temperature (600{degree sign}C to 800{degree sign}C) solid oxide fuel cells (IT-SOFC) in 2001. High performance disk-type with lanthanum gallate-based electrolyte seal-less cell-stack design enable high efficiency operation at temperatures below sign}C. development of 10 kW-class CHP system under supported by NEDO (New Energy Industrial Technology...
Tohoku Electric Power Co., Inc. and Mitsubishi Heavy Industries, Ltd. have begun a joint development program on key technologies for next generation gas turbine which aims combined cycle efficiency over 55%. Under the program, advanced cooling technologies, better heat resistant materials thy low NOx (DLN) combustion are being developed. For verifying high temperature testing is going to be performed using HTDU (High Temperature Demonstration Unit) at Takasago Machinery Works, This paper...
Adiabatic effective action for vortices in neutral and charged superfluids at zero temperature are calculated using the topological Landau-Ginzburg theory recently proposed by Hatsuda, Yahikozawa, Ao Thouless, vortex dynamics examined. The Berry phase term arising naturally yields Magnus force both superfluids. It is shown that superfluid there only one degree of freedom, namely center vorticities, energy proportinal to sum all vorticities so it finite vanishing total vorticity system. On...
Time-resolved photoelectron imaging were performed with 90-nm pump pulses. Quantum beat by coherent excitation of multiple Rydberg states in Kr, and photodissociation CO2 within a few ps from initially excited state(s) observed.