A5053709332- Laser-Plasma Interactions and Diagnostics
- Laser Material Processing Techniques
- High-pressure geophysics and materials
- Ion-surface interactions and analysis
- Laser-induced spectroscopy and plasma
- BIM and Construction Integration
- Welding Techniques and Residual Stresses
- Additive Manufacturing Materials and Processes
- Advanced Electron Microscopy Techniques and Applications
- Advanced X-ray Imaging Techniques
Osaka University
2023-2025
Institute for Laser Technology
2025
Abstract Laser–plasma interaction and hot electrons have been characterized in detail laser irradiation conditions relevant for direct-drive inertial confinement fusion. The experiment was carried out at the Gekko XII facility multibeam planar target geometry an intensity of approximately $3\times {10}^{15}$ W/cm 2 . Experimental data suggest that high-energy electrons, with temperatures 20–50 keV conversion efficiencies $\eta <1\%$ , were mainly produced by damping electron plasma waves...
Nanowire arrays—vertically aligned metal wires with a few hundred nanometers in diameter—are promising nano-structured targets for high-energy-density physics and related applications. We have been developing ultrafast, time-resolved measurements on laser-irradiated using the x-ray free electron laser at SACLA facility. Here, we present fabrication of various kinds nanowire array order to explore absorption mechanism ultrahigh intensity irradiation, their application laser-irradiation...
We perform experimental characterization of a line-shaped molten pool produced by single-mode continuous-wave fiber laser at 1070 nm wavelength coupled with line-focusing optics, wherein heat conduction-type melting occurs gentle hydrodynamics. This causes sputterless melting. To produce the desired shape along line-focus direction using an intensity profile modification technique for laser, we used prism pair cylindrical and spherical lenses. A nickel-coated cold-rolled steel sheet was as...
Abstract This paper examines a case study using Christopher Alexander’s Pattern Language in architectural design to explore the impact of knowledge operation processes on concept generation with Large Model (LLM). The for pattern language involves chain thought defining context, functional requirements, and physical attributes alternative solutions. Three prompting methods were compared: 1) presenting only problem, 2) adding plain text language, 3) including both instructions operation....
Ultrahigh-energy density (UHED) states greater than 1 Gbar pressure are typically observed under extreme conditions, such as in the core of an inertial confinement fusion implosion. A novel alternative approach for generating volumetric UHED is to use nanowire arrays irradiated with a femtosecond ultrahigh-intensity laser. In this paper, we present experimental investigation on laser absorption and energy transport picosecond kilojoule petawatt The laser–target interactions were studied by...