A5043600149- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- High-pressure geophysics and materials
- Laser-Matter Interactions and Applications
- Magnetic confinement fusion research
- Dust and Plasma Wave Phenomena
- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Thermal Radiation and Cooling Technologies
- Laser Material Processing Techniques
- Particle Accelerators and Free-Electron Lasers
- Ion-surface interactions and analysis
- Plasma Diagnostics and Applications
- Solar Thermal and Photovoltaic Systems
- Cold Fusion and Nuclear Reactions
- Nuclear Physics and Applications
- Metamaterials and Metasurfaces Applications
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Solar-Powered Water Purification Methods
- Fusion and Plasma Physics Studies
- Gas Dynamics and Kinetic Theory
- Laser Design and Applications
- Optical properties and cooling technologies in crystalline materials
Shanghai Jiao Tong University
2018-2025
Zhejiang University
2019-2022
Friedrich Schiller University Jena
2018-2021
Helmholtz Institute Jena
2016-2021
Shanghai Institute of Optics and Fine Mechanics
2015-2021
Peking University
2013-2021
Xi'an Jiaotong University
2018-2020
Beijing University of Posts and Telecommunications
2017-2019
Collaborative Innovation Center of Quantum Matter
2019
State Key Laboratory of Nuclear Physics and Technology
2014-2018
While major progress has been made in the research of inertial confinement fusion, significant challenges remain pursuit ignition. To tackle challenges, we propose a double-cone ignition (DCI) scheme, which two head-on gold cones are used to confine deuterium-tritium (DT) shells imploded by high-power laser pulses. The scheme is composed four progressive controllable processes: quasi-isentropic compression, acceleration, collision and fast heating compressed fuel. compression performed...
Abstract Intense particle beams generated from the interaction of ultrahigh intensity lasers with sample foils provide options in radiography, high-yield neutron sources, high-energy-density-matter generation, and ion fast ignition. An accurate understanding beam transportation behavior dense matter is crucial for all these applications. Here we report experimental evidence on one order magnitude enhancement intense laser-accelerated proton stopping ionized matter, comparison current-widely...
The proton-boron (p-$^{11}\mathrm{B}$) reaction is regarded as the holy grail of advanced fusion fuels, since primary produces three $\ensuremath{\alpha}$ particles with few neutrons and induced radioactivities from second order reactions. Compared to deuterium-tritium a much higher temperature required. Moreover, bremsstrahlung energy losses due high nuclear charge boron deem it seemingly apparent than reactor based on plasma in equilibrium say least very difficult. It becoming more...
Increasing the absorption efficiency of solar radiation has great significance for renewable energy applications, such as residential water heating, seawater desalination, wastewater treatment and thermophotovoltaic devices. Optical absorbers based on metamaterials have been widely investigated using a variety structural designs. However, near‐ideal thermal absorber not yet demonstrated, which near unity from ultraviolet to near‐infrared region meanwhile an close zero in mid‐infrared region....
A Monte-Carlo approach to proton stopping in warm dense matter is implemented into an existing particle-in-cell code. The model based on multiple binary-collisions among electron-electron, electron-ion and ion-ion, taking account contributions from both free bound electrons, allows calculate particle much more natural manner. At low temperature limit, when ``all'' electron are bounded at the nucleus, power converges predictions of Bethe-Bloch theory, which shows good consistency with data...
T. H. Rider investigated the challenges of sustaining p-11B fusion away from ThermoNuclear Steady-State accounting for Bremsstrahlung losses (TNSSB) in his 1997 paper [Phys. Plasmas 4, 1039 (1997)]. We revisit part work using first-principles particle simulations, which more accurately capture underlying physical processes. This study supports aspects Rider's analysis by considering non-Maxwellian electron velocity distributions and significantly lowering temperatures compared to ion...
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Magnetized collisionless shocks drive particle acceleration broadly in space and astrophysics. We perform the first large-scale particle-in-cell simulations with realistic laboratory parameters (density, temperature, velocity) to investigate magnetized shock of associated ion head-on colliding plasmas. It is shown that a perpendicular formed about fourfold density jump when two plasma flows collide. This also characterized by rapid increase neutron yield alteration velocity shift respect...
Abstract Colliding of two high Mach-number plasma jets is one the methods for generating shocks, offering valuable insights inertial confinement fusion (ICF) and astrophysics. Especially, quantum degeneracy kinetic effects appear when colliding are density Mach number, which play critical roles in resulting dynamics. Recently, double-cone ignition (DCI) project provides an unprecedented experimental platform investigating collision to explore many new physics. In this work, a theoretical...
The annular electron beam has significant practical potential in high-energy physics and condensed matter physics, which can be used for edge-enhancement imaging, collimation of antiprotons conventional linear accelerators, acceleration positively particles like positrons, structured x-ray generation, manipulation nanomaterials. quality an depends on its energy, flux, topology. In this article, we study the transport characteristics a plasma medium propose scheme to modify it. According our...
The Bernstein mode is a well-known electrostatic in magnetized plasmas, and it has applications many fields. This paper extends the from classical plasmas to quantum by means of kinetic theory self-consistent manner. A version Harris dispersion relation derived. pseudodifferential operator obtained formula calculated numerical method hence nonrelativistic modes including recoil, finite-temperature, Landau quantization effects are calculated. These results important for plasma physics extreme...
We show that a high current quasi-monoenergetic electron beam and peaked brilliant gamma-ray can be generated by irradiating an ultra-intense laser pulse on uniform near critical density plasma, with spot radius RL∼(λ/π)2a/n, here λ is the wave length, denotes normalized intensity, n plasma density. Due to relativistic resonant phase locking mechanism, energy oscillating electrons are trapped ride electric field, unprecedented ultra-fast ultra-brilliant emitted from electrons. Both photons...
Generation of high-energy mono-energetic heavy ion beams by radiation pressure acceleration (RPA) intense laser pulses is investigated. Different from previously studied RPA protons or light ions, the dynamic ionization high-Z atoms can stabilize acceleration. A self-organized, stable scheme specifically for proposed, where peak intensity required to match with large energy gap when successive state passes noble gas configurations [such as removing an electron helium-like charge (Z−2)+...
It is shown that the transverse Rayleigh-Taylor-like (RT) instability in hole-boring radiation pressure acceleration can be suppressed by using an elliptically polarized (EP) laser. A moderate $\mathbit{J}\ifmmode\times\else\texttimes\fi{}\mathbit{B}$ heating of EP laser will thermalize local electrons, which leads to diffusion ions, suppressing short wavelength perturbations RT instability. proper condition polarization ratio obtained analytically for given intensity and plasma density. The...
Direct numerical simulation of intense laser–solid interactions is still great challenges, because the many coupled atomic and plasma processes, such as ionization dynamics, collision among charged particles collective electromagnetic fields, to name just a few. Here, we develop new particle-in-cell (PIC) code, which enables us calculate in more realistic way. This code able cover almost ‘all’ physical processes. As an application generation transport energetic electrons front within solid...
A physical model based on a Monte Carlo approach is proposed to calculate the ionization dynamics of hot-solid-density plasmas within particle-in-cell (PIC) simulations, and where impact (collision) (CI), electron-ion recombination (RE), potential depression (IPD) by surrounding are taken into consideration self-consistently. When compared with other models, which applied in literature for near thermal equilibrium, temporal relaxation can also be simulated model. Besides, this general both...
A right-hand circularly polarized electromagnetic wave can propagate in a sufficiently magnetized plasma of any density without encountering cutoff the whistler mode. With recent realization tens-kilotesla magnetic fields, laser propagation highly high-density plasmas has become practical interest, especially for heating to high energy and igniting fusion targets. In this paper, regime laser-plasma interaction is discussed. It shown by one- two-dimensional particle-in-cell simulations that...
A high-order implicit multidimensional particle-in-cell (PIC) method is developed for simulating plasmas at solid densities. The space-time arrangement based on Yee and a leapfrog algorithm electromagnetic fields particle advancement. field solver completely eliminates numerical instabilities found in explicit PIC methods with relaxed time step grid resolution. Moreover, this the cooling standard by using pseudo-electric-field method. pusher combines Boris Newton-Krylov iteration This...
Nonlinear evolution of stimulated Raman scattering (SRS) near the quarter-critical density is studied using one-dimensional (1D) and two-dimensional (2D) particle-in-cell simulations in homogeneous plasmas. In 1D configuration, with two-plasmon decay (TPD) instability excluded, system evolves into two regimes distinguished by whether cavities have been formed or not. At low temperatures, a cavity regime characterised high absorption reflection, at temperatures nonlinear frequency shift due...
A scheme to radiate a highly collimated γ-ray pulse is proposed through the interaction between an ultra-intense laser and narrow tube target. The pulse, with high conversion efficiency, can be generated as result of electron acceleration in longitudinal electric field. In Particle-in-Cell simulation 10-PW laser, 18% energy transferred into forward γ-rays divergence angle less than 3°. It also found that such produced large range diameters intensities. This could realized experiment coming...
In recent years, transparent solar technology has attracted increasing attention, which the potential to let many of surfaces our buildings environment be turned into harvesting arrays without impacting their function or aesthetics. Glazing with nanostructured surface possessing different absorption ability from directions is studied currently as a route reduce environmental cost keeping appropriate indoor temperature. Here and thermal metasurface based on low copper plasmonic nanostructures...
The extreme laser intensity, IL>1023 W/cm2, will be made possible by Extreme Light Infrastructure. Such an ultra-intense and ultra-short pulse promises to promote laser-matter interaction into the exotic quantum-electro-dynamical regime. Electrons quivering in such a strong experience radiation reaction (RR) friction force radiating high frequency photons. These intensities also make acceleration of heavy ions new regimes. In this paper, ion beam generation based on foil is...
The National Ignition Facility has recently achieved successful burning plasma and ignition using the inertial confinement fusion (ICF) approach. However, there are still many fundamental physics phenomena that not well understood, including kinetic processes in hohlraum. Shan et al. [Phys. Rev. Lett. 120, 195001 (2018)] utilized energy spectra of neutrons to investigate colliding a hohlraum indirect drive ICF. due typical large spatial-temporal scales, this experiment could be simulated by...
The normal modes, i.e., the eigensolutions to dispersion relation equation, are most fundamental properties of a plasma. real part indicates intrinsic oscillation frequency while imaginary Landau damping rate. In literature, modes quantum plasmas obtained by means small approximation, which is invalid for high-k modes. this paper, we solve exact relations via analytical continuation scheme, and, due multi-value nature Fermi-Dirac distribution, reformation complex Riemann surface required. It...
We report systematic studies of laser-driven proton beams produced with micrometer-thick solid targets made aluminum and plastic, respectively. Distinct effects the target materials are found on total charge, cutoff energy, beam spot protons in experiments, these described well by two-dimensional particle-in-cell simulations incorporating intrinsic material properties. It is that a laser intensity 8 × 1019 W/cm2, normal sheath acceleration dominant mechanism for both types target. For...