A5038276388- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Laser-Matter Interactions and Applications
- High-pressure geophysics and materials
- Magnetic confinement fusion research
- Atomic and Molecular Physics
- Laser Design and Applications
- Advanced Fiber Laser Technologies
- Plasma Diagnostics and Applications
- Ionosphere and magnetosphere dynamics
- Advanced X-ray Imaging Techniques
- Dust and Plasma Wave Phenomena
- Laser Material Processing Techniques
- Diamond and Carbon-based Materials Research
- Fluid Dynamics and Turbulent Flows
- Pulsars and Gravitational Waves Research
- Computational Fluid Dynamics and Aerodynamics
- Laser-Ablation Synthesis of Nanoparticles
- Particle accelerators and beam dynamics
- Semiconductor Lasers and Optical Devices
- Crystallography and Radiation Phenomena
- Solar and Space Plasma Dynamics
- Gas Dynamics and Kinetic Theory
- Ion-surface interactions and analysis
- Planetary Science and Exploration
Extreme Light Infrastructure Beamlines
2019-2025
BMW (Germany)
2014-2024
China Academy of Engineering Physics
2024
BMW Group (Germany)
2024
Czech Academy of Sciences, Institute of Physics
2013-2022
Xi'an Jiaotong University
2019-2022
Czech Academy of Sciences
2022
Czech Academy of Sciences, Institute of Plasma Physics
2019-2021
Peking University
2021
Czech Technical University in Prague
2016-2019
ELI-Beamlines (ELI-BL), one of the three pillars Extreme Light Infrastructure endeavour, will be in a unique position to perform research high-energy-density-physics (HEDP), plasma physics and ultra-high intensity (UHI) (1022W/cm2) laser–plasma interaction. Recently need for HED laboratory was identified P3 (plasma platform) installation under construction ELI-BL an answer. The 10 PW laser makes possible fundamental topics from high-field new extreme states matter such as radiation-dominated...
Two main paths are now under investigation that aim at thermonuclear ignition of hydrogen isotopes using lasers: central hot spot self-ignition and externally driven fast preassembled fuel. A third, intermediate, scheme is shock ignition, which combines the simplicity capsules to hydrodynamic robustness fuel assembly. This study addresses potential for HiPER project provides a preliminary assessment possible detrimental effects. Monodimensional simulations performed in terms launching time...
Short light pulse amplification using the stimulated Brillouin backscattering mechanism is considered. The novel feature that interaction process takes place in strongly coupled regime and therefore compression not limited by ion-acoustic wave period. very efficient due to large ratio of frequency characteristic frequency. Although large-amplitude waves are generated subsequent breaking place, fluid kinetic nonlinearities do intervene with itself.
The energy transfer from a long (3.5 ps) pump pulse to short (400 fs) seed due stimulated Brillouin backscattering in the strong-coupling regime is investigated. two pulses, both at same wavelength of 1.057 microm are quasicounterpropagating preformed underdense plasma. Relative amplification factors for up 32 obtained. maximum obtained amplified 60 mJ. Simulations agreement with experimental results and suggest paths further improvement scheme.
Numerical simulations of the laser pulse interaction with an inhomogeneous, large size, high temperature plasma are presented. The intensity, 1016 W cm−2, temperature, 5 keV, and density scale length 300 µm correspond to conditions shock ignition scenario. It is demonstrated that after a short initial burst backscattering, significant part incident radiation absorbed in underdense energy transported dense by electrons energies 20–40 keV. absorption mechanism associated self-organized...
Plasma media, by exciting Raman (electron) or Brillouin (ion) waves, have been used to transfer energy from moderately long, high-energy light pulses short ones. Using multidimensional kinetic simulations, we define here the optimum window in which a scheme can be exploited for amplification and compression of laser over distances very high power. We also show that shaping plasma allows increasing efficiency process while minimizing other unwanted processes. Moreover, that, contrary what was...
The dynamics of an electron bunch irradiated by two focused colliding super-intense laser pulses and the resulting γ e(-)e(+) production are studied. Due to attractors in a standing wave created photon emission pair production, general, more efficient with linearly polarized than circularly ones. dependence key parameters on intensity wavelength allows us identify conditions for cascade development γe(-)e(+) plasma creation.
Abstract The new generation of laser facilities is expected to deliver short (10 fs–100 fs) pulses with 10–100 PW peak power. This opens an opportunity study matter at extreme intensities in the laboratory and provides access physics. Here we propose scatter GeV-class electron beams from laser-plasma accelerators a multi-PW normal incidence. In this configuration, one can both create accelerate electron-positron pairs. particles are generated focus gain relativistic momentum direction...
The physics of laser-plasma interaction is studied on the Shenguang III prototype laser facility under conditions relevant to inertial confinement fusion designs. A sub-millimeter-size underdense hot plasma created by ionization a low-density plastic foam four high-energy (3.2 kJ) beams. An beam fired with delay permitting evaluation excitation parametric instabilities at different stages evolution. Multiple diagnostics are used for characterization, scattered radiation, and accelerated...
Vacuum birefringence produces a differential phase between orthogonally polarized components of weak electromagnetic probe in the presence strong field. Despite representing hallmark prediction quantum electrodynamics, vacuum remains untested pure light configurations due to extremely large fields required for detectable difference. Here, we exploit programmable focal velocity and extended range flying focus laser pulse substantially lower power detection birefringence. In proposed scheme,...
This Letter presents first experimental results of the laser imprint reduction in fusion scale plasmas using a low-density foam layer. The experiments were conducted on LIL facility at energy level 12 kJ with millimeter-size plasmas, reproducing conditions initial interaction phase direct-drive scheme. include generation supersonic ionization wave and fluctuations after propagation through 500 mum limited levels stimulated Brillouin Raman scattering. smoothing mechanisms are analyzed explained.
Abstract The intensities of the order 10 23–24 W/cm 2 are required to efficiently generate electron-positron pairs in laser-matter interaction when multiple laser beam collision is employed. To achieve such intense fields with upcoming generation PW beams, focusing sub-micron spot size required. In this paper, possibility pair production cascade development studied for case a standing wave created by two tightly focused colliding pulses. Even though stronger ponderomotive force expels seed...
Abstract Electron–positron pair production via Breit–Wheeler process requires laser intensities approaching 10 24 W cm −2 due to the small cross-section. Here, we propose a mechanism for brilliant γ -ray emission and dense GeV pairs creation accompanied with high-harmonic generation by using plasma mirror an ultra short pulse intensity of 3 × 23 . The is reflected solid surface after propagating tens microns in near-critical density breaks into wave packets. high order harmonic field...
We discuss and numerically test a method for direct unambiguous measurement of ultrahigh laser intensities exceeding ${10}^{20}\phantom{\rule{0.28em}{0ex}}\mathrm{W}/{\mathrm{cm}}^{2}$. The is based on the use multiple sequential tunneling ionization heavy atoms with sufficiently high potentials. show that, due to highly nonlinear dependence rates electromagnetic field strength, an offset in charge distribution ions appears sensitive peak value intensity focus. A simple analytic theory...
The P3 installation of ELI-Beamlines is conceived as an experimental platform for multiple high-repetition-rate laser beams spanning time scales from femtosecond via picosecond to nanosecond. upcoming L4n beamline will provide shaped nanosecond pulses up 1.9 kJ at a maximum repetition rate 1 shot/min. This unique possibilities high-pressure, high-energy-density physics, warm dense matter, and laser–plasma interaction experiments. Owing the high rate, it become possible obtain considerable...
Foam targets have gained considerable importance over the last decade in laser–matter interaction. They find widespread applications such as inertial confinement fusion and secondary sources for particles radiation. At same time, advent of high repetition-rate laser systems, be they short-pulse tens femtosecond regime or kilo-Joule nanosecond regime, calls equally repetition rate targetry systems. A well-established system is tape target. In this article, we present successful marriage a...
Abstract The ion temperature in laser-heated foam materials can be considerably higher than the electron due to internal collisions of plasma flows originating from heterogeneous microstructure. 
Recently, we have developed a novel hybrid multiscale model for laser-foam interaction that successfully reproduces experimentally measured heat front propagation subcritical foams various densities. However, when applied undercritical with average density closer critical, simulations...
With the advent of high repetition rate laser facilities, novel diagnostic tools compatible with these advanced specifications are required. This paper presents design an active gamma-ray spectrometer intended for experiments, particular emphasis on functionality within a PW level laser-plasma interaction chamber’s extreme conditions. The uses stacked scintillators to accommodate broad range energies, demonstrating its adaptability various experimental setups. In addition, it has been...
Abstract We investigate the mechanisms responsible for single-lobed versus double-lobed angular distributions of emitted γ-rays in laser-irradiated plasmas, focusing on how direct laser acceleration (DLA) shapes emission profile. Using test-particle calculations, we show that efficiency DLA plays a central role. In inefficient regime, electrons rapidly gain and lose energy within single cycle, resulting profile heavily influenced by fields. contrast, efficient steadily accumulate over...
A detailed description of stimulated Raman backscattering and related processes for the purpose inertial confinement fusion requires multi-dimensional kinetic simulations a full speckle in high-temperature, large-scale, inhomogeneous plasma. In particular shock-ignition scheme operating at high laser intensities, aspects are predominant. High- (Iλo2~5×1015Wμm2/cm2) as well low-intensity (Iλo2~1015Wμm2/cm2) cases show predominance collisionless, collective interaction. While two-plasmon decay...
The shock ignition concept implies laser pulse intensities higher than 1015 W/cm2 (at the wavelength of 351 nm), which is commonly accepted limit where inverse bremsstruhlung absorption dominates. transition from collisional to collisionless in plasma interactions at studied present paper with help large scale one-dimensional particle-in-cell simulations. initial parameters are defined by hydrodynamic simulations corresponding recent experiments. predict that a quasi-steady regime...
Two-plasmon-decay (TPD) instability is investigated for conditions relevant the shock-ignition (SI) scheme of inertial confinement fusion. Two-dimensional particle-in-cell simulations show that in a hot, large-scale plasma, TPD develops concomitance with stimulated Raman scattering (SRS). It active only during first picosecond interaction, and then it rapidly saturated due to plasma cavitation. TPD-excited waves extend small wavelengths, above standard Landau cutoff. The hot electron...
The application of image-guided systems with or without support by surgical robots relies on the accuracy navigation process, including patient-to-image registration. surgeon must carry out procedure based information provided system, usually being able to verify its correctness beyond visual inspection. Misleading surrogate parameters such as fiducial registration error are often used describe success while a lack methods describing effects errors, those caused tracking calibration, may...