Shinsuke Fujioka
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View article: Enhancement of J x B electron acceleration with the micro-structured target and picosecond high-contrast relativistic-intensity laser pulse
Enhancement of J x B electron acceleration with the micro-structured target and picosecond high-contrast relativistic-intensity laser pulse Open
Efficient generation of multi-hundred-keV electrons is essential for isochoric heating and can influence ion acceleration. We investigated electron acceleration from copper-oleate foil targets, either planar or coated with a gold mesh stru…
View article: Boosting fast ignition heating through interaction between ultrahigh-contrast heating lasers and a cone-shaped target
Boosting fast ignition heating through interaction between ultrahigh-contrast heating lasers and a cone-shaped target Open
In pursuing a carbon-neutral society, inertial fusion energy is a pivotal technology, offering a sustainable and virtually limitless energy source. Enhancing plasma heating efficiency is crucial for inertial fusion energy, following the ig…
View article: Plasma Instability Evolution and Particle Heating in the Foot Region of Perpendicular Shocks in Young Supernova Remnants
Plasma Instability Evolution and Particle Heating in the Foot Region of Perpendicular Shocks in Young Supernova Remnants Open
Particle acceleration from collisionless shocks is a key mechanism in the generation of cosmic rays. In particular, shocks in young supernova remnants (SNRs) are considered to be a major source of galactic cosmic rays. This study investiga…
View article: Thrust Measurement of Extreme Ultraviolet Photoablation
Thrust Measurement of Extreme Ultraviolet Photoablation Open
View article: Enhanced Plasma Heating by Interaction with High-Contrast Laser and Cone-Shaped Target
Enhanced Plasma Heating by Interaction with High-Contrast Laser and Cone-Shaped Target Open
View article: Spectral Shape Control of Laser-Induced Terahertz Waves from Micro Split-Ring Resonators Made of Metallic Nanostructures
Spectral Shape Control of Laser-Induced Terahertz Waves from Micro Split-Ring Resonators Made of Metallic Nanostructures Open
Efficient terahertz sources with controllable characteristics such as frequency range and polarization state are being rapidly researched and developed to suit various practical applications. To address this need, we realized the idea of c…
View article: Laser-Driven Proton-Only Acceleration in a Multicomponent Near-Critical-Density Plasma
Laser-Driven Proton-Only Acceleration in a Multicomponent Near-Critical-Density Plasma Open
An experimental investigation of collisionless shock ion acceleration is presented using a multicomponent plasma and a high-intensity picosecond duration laser pulse. Protons are the only accelerated ions when a near-critical-density plasm…
View article: Formation of high areal density core using an efficient and robust implosion method for fast ignition
Formation of high areal density core using an efficient and robust implosion method for fast ignition Open
A new fuel compression method for a fast ignition scheme is discussed. To form a high areal density fuel plasma for the ignition condition, homogenous isentropic compression (HIC) with solid spherical target is effective. We improve a mult…
View article: Single-shot laser-driven neutron resonance spectroscopy for temperature profiling
Single-shot laser-driven neutron resonance spectroscopy for temperature profiling Open
The temperature measurement of material inside of an object is one of the key technologies for control of dynamical processes. For this purpose, various techniques such as laser-based thermography and phase-contrast imaging thermography ha…
View article: Second harmonic generation of focused beams on the LFEX laser facility
Second harmonic generation of focused beams on the LFEX laser facility Open
There is a strong demand for efficient second harmonic generation (SHG) in ultra-intense short-pulse lasers. This paper demonstrates the generation of an unconverted fundamental (1ω)+second harmonics (2ω) mixed laser on the LFEX laser syst…
View article: Effect of irradiation uniformity on quasi-isentropic shock compression of solid spheres
Effect of irradiation uniformity on quasi-isentropic shock compression of solid spheres Open
In inertial confinement fusion using central ignition, the ignition hot spot is generated through self-heating during fuel compression. In contrast, fast ignition creates the hot spot through external heating. This difference allows the fa…
View article: Absolute density measurement of hydrogen radicals in XUV induced plasma for tin contamination cleaning via laser-induced fluorescence
Absolute density measurement of hydrogen radicals in XUV induced plasma for tin contamination cleaning via laser-induced fluorescence Open
Effective cleaning of tin contamination on the collecting mirrors in extreme ultraviolet source is one of the key techniques to improve throughput and cost performance of extreme ultraviolet lithography. Hydrogen radicals produced in hydro…
View article: Nuclear-Fusion Reaction Beats Breakeven
Nuclear-Fusion Reaction Beats Breakeven Open
Nuclear-Fusion Reaction Beats Breakeven
View article: Observation of Ion Species Energy Dependence on Charge-to-Mass Ratio in Laser-Driven Magnetic Reconnection Experiment
Observation of Ion Species Energy Dependence on Charge-to-Mass Ratio in Laser-Driven Magnetic Reconnection Experiment Open
View article: Indispensability of Ultra-High-Contrast Heating Lasers for Fast Ignition
Indispensability of Ultra-High-Contrast Heating Lasers for Fast Ignition Open
The enhancement of plasma heating efficiency is important for realizing inertial fusion energy, which follows the ignition achieved with the laser-indirect-drive central-ignition approach. An increase in the relativistic electron beam (REB…
View article: STAR2D simulation and Hydrogen photodissociation cross sections dataset
STAR2D simulation and Hydrogen photodissociation cross sections dataset Open
This dataset consists of two tables: extreme ultraviolet (XUV) and vacuum ultraviolet (VUV) emission spectra from a laser produced, 1 micron wavelength plasma. The emission spectra was calculated from STAR-2D simulation results. The data c…
View article: STAR2D simulation and Hydrogen photodissociation cross sections dataset
STAR2D simulation and Hydrogen photodissociation cross sections dataset Open
This dataset consists of two tables: extreme ultraviolet (XUV) and vacuum ultraviolet (VUV) emission spectra from a laser produced, 1 micron wavelength plasma. The emission spectra was calculated from STAR-2D simulation results. The data c…
View article: Single-Shot Laser-Driven Neutron Resonance Spectroscopy for Temperature Profiling
Single-Shot Laser-Driven Neutron Resonance Spectroscopy for Temperature Profiling Open
The temperature measurement of material inside of an object is one of the key technologies for control of dynamical processes. For this purpose, various techniques such as laser-based thermography and phase-contrast imaging thermography ha…
View article: Effects of hydrogen concentration in ablator material on stimulated Raman scattering, two-plasmon decay, and hot electrons for direct-drive inertial confinement fusion
Effects of hydrogen concentration in ablator material on stimulated Raman scattering, two-plasmon decay, and hot electrons for direct-drive inertial confinement fusion Open
Laser plasma instabilities, such as stimulated Raman scattering (SRS) and two-plasmon decay (TPD), are basic phenomena in intense laser science and applications. In direct-drive inertial confinement fusion (ICF) where a fuel capsule is imp…
View article: Performance scaling with an applied magnetic field in indirect-drive inertial confinement fusion implosions
Performance scaling with an applied magnetic field in indirect-drive inertial confinement fusion implosions Open
Magnetizing a cryogenic deuterium–tritium (DT)-layered inertial confinement fusion (ICF) implosion can improve performance by reducing thermal conduction and improving DT-alpha confinement in the hot spot. A room-temperature, magnetized in…
View article: Issue Information
Issue Information Open
Movement Disorders Clinical Practice-is an online-only journal committed to publishing high quality peer reviewed articles related to clinical aspects of movement disorders which broadly include phenomenology (interesting case/case series/…
View article: A Case of Posterior Interosseous Nerve Palsy Associated With Robotic Low Anterior Resection
A Case of Posterior Interosseous Nerve Palsy Associated With Robotic Low Anterior Resection Open
A peripheral nerve compression injury associated with surgical positioning is an important complication that might compromise quality of life. We report a rare case of posterior interosseous nerve (PIN) palsy after robotic rectal cancer su…
View article: Enhancement of K-shell spectroscopy for temperature measuring of isochorically heated matter in the sub-keV range
Enhancement of K-shell spectroscopy for temperature measuring of isochorically heated matter in the sub-keV range Open
Both K-shell x-ray emission spectroscopy and fluorescence spectroscopy are well-accepted diagnostics for experimental studies of warm dense matter and hot dense matter (HDM). Until now, however, this diagnosis has been used for the study o…
View article: Laser-Driven Neutron Generation Realizing Single-Shot Resonance Spectroscopy
Laser-Driven Neutron Generation Realizing Single-Shot Resonance Spectroscopy Open
Neutrons are powerful tools for investigating the structure and properties of materials used in science and technology. Recently, laser-driven neutron sources (LDNS) have attracted the attention of different communities, from science to in…
View article: Demonstration of efficient relativistic electron acceleration by surface plasmonics with sequential target processing using high repetition lasers
Demonstration of efficient relativistic electron acceleration by surface plasmonics with sequential target processing using high repetition lasers Open
For high repetition ultrahigh-intensity laser system, automatic alignment of structured target is key to achieving consistent particle acceleration and plasma heating. In this work, we demonstrate efficient electron acceleration with two s…
View article: Non-thermal electron acceleration from magnetically driven reconnection in a laboratory plasma
Non-thermal electron acceleration from magnetically driven reconnection in a laboratory plasma Open
View article: Bottom Boundary-Fitted Free Surface Flow Simulation with Coordinate Transformation Using SPH(2)
Bottom Boundary-Fitted Free Surface Flow Simulation with Coordinate Transformation Using SPH(2) Open
Particle methods such as the SPH and MPS methods have problems because it is difficult to treat curved bottom surfaces such as seabed surfaces accurately. In this study, regarding this problem, the curved bottom surfaces' treatments have b…
View article: Feasibility study of laser-driven neutron sources for pharmaceutical applications
Feasibility study of laser-driven neutron sources for pharmaceutical applications Open
We predict the production yield of a medical radioisotope ${}^{67}$ Cu using ${}^{67}$ Zn(n, p) ${}^{67}$ Cu and ${}^{68}$ Zn(n, pn) ${}^{67}$ Cu reactions with fast neutrons provided from laser-driven neutron sources. The neutrons were ge…
View article: Fabrication of high-concentration Cu-doped deuterated targets for fast ignition experiments
Fabrication of high-concentration Cu-doped deuterated targets for fast ignition experiments Open
In high-energy-density physics, including inertial fusion energy using high-power lasers, doping tracer atoms and deuteration of target materials play an important role in diagnosis. For example, a low-concentration Cu dopant acts as an x-…
View article: Increased Ion Temperature and Neutron Yield Observed in Magnetized Indirectly Driven <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">D</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>-Filled Capsule Implosions on the National Ignition Facility
Increased Ion Temperature and Neutron Yield Observed in Magnetized Indirectly Driven -Filled Capsule Implosions on the National Ignition Facility Open
The application of an external 26 Tesla axial magnetic field to a D_{2} gas-filled capsule indirectly driven on the National Ignition Facility is observed to increase the ion temperature by 40% and the neutron yield by a factor of 3.2 in a…