A5088419916- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- High-pressure geophysics and materials
- Laser-Matter Interactions and Applications
- Atomic and Molecular Physics
- Laser Design and Applications
- Astro and Planetary Science
- Nuclear Physics and Applications
- Laser Material Processing Techniques
- Ion-surface interactions and analysis
- Magnetic confinement fusion research
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Origins and Evolution of Life
- Advanced Optical Sensing Technologies
- Astrophysics and Star Formation Studies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Ocular and Laser Science Research
- Fusion materials and technologies
- Infrared Target Detection Methodologies
- Advanced Fluorescence Microscopy Techniques
- Advanced X-ray Imaging Techniques
- Laser-Ablation Synthesis of Nanoparticles
- Optical Systems and Laser Technology
- Petroleum Processing and Analysis
Czech Academy of Sciences, Institute of Plasma Physics
2016-2025
Czech Academy of Sciences, Institute of Physics
2016-2025
Czech Academy of Sciences
2007-2025
Centre of Plasma Physics - Institute for Plasma Research
2023
National Research Nuclear University MEPhI
2017-2021
Czech Technical University in Prague
2017-2021
Institute of Plasma Physics and Laser Microfusion
2017-2021
Military University of Technology in Warsaw
2021
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
2017
Queen's University Belfast
2017
The nuclear reaction known as proton-boron fusion has been triggered by a subnanosecond laser system focused onto thick boron nitride target at modest intensity (∼10^{16}W/cm^{2}), resulting in record yield of generated α particles. estimated value particles emitted per pulse is around 10^{11}, thus orders magnitude higher than any other experimental result previously reported. accelerated α-particle stream shows unique features terms kinetic energy (up to 10 MeV), duration (∼10 ns), and...
Ion acceleration from gaseous targets driven by relativistic-intensity lasers was demonstrated as early the late 1990s, yet most of experiments conducted to date have involved picosecond-duration, Nd:glass operating at low repetition rate. Here, we present measurements on interaction ultraintense <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mo>(</a:mo><a:mo>≈</a:mo><a:msup><a:mn>10</a:mn><a:mn>20</a:mn></a:msup><a:mspace width="0.28em"/><a:mi...
An experiment was performed using the PALS laser to study laser-target coupling and laser-plasma interaction in an intensity regime ≤1016 W/cm2, relevant for “shock ignition” approach Inertial Confinement Fusion. A first beam at low used create extended preformed plasma, a second one strong shock. Pressures up 90 Megabars were inferred. Our results show importance of details energy transport overdense region.
Generating pure proton beams using lasers for novel cancer therapies has long challenged researchers. In a new experiment, scientists irradiate thin hydrogen ribbon with high-power laser to generate large and population of protons.
Laser–plasma interaction (LPI) at intensities $10^{15}{-}10^{16}~\text{W}\cdot \text{cm}^{-2}$ is dominated by parametric instabilities which can be responsible for a significant amount of non-collisional absorption and generate large fluxes high-energy nonthermal electrons. Such regime paramount importance inertial confinement fusion (ICF) in particular the shock ignition scheme. In this paper we report on an experiment carried out Prague Asterix Laser System (PALS) facility to investigate...
Context . It is well known that hydrogen cyanide and formamide can universally be considered as key molecules in prebiotic synthesis. Despite the fact has been detected interplanetary interstellar environments, other species are far more abundant, including, for example, formaldehyde. However, several results indicate play role of important intermediate a feedstock molecule chemical abiogenesis. Diverse recently proposed scenarios origins first biopolymers show liquid environments could have...
Chemical environments of young planets are assumed to be significantly influenced by impacts bodies lingering after the dissolution protoplanetary disk. We explore chemical consequences these under reducing planetary atmospheres dominated carbon monoxide, methane, and molecular nitrogen. Impacts were simulated using a terawatt high-power laser system. Our experimental results show that one-pot impact-plasma-initiated synthesis all RNA canonical nucleobases simplest amino acid glycine is...
The current balancing the target charging and emission of transient electromagnetic pulses (EMP) driven by interaction a focused 1.315 μm iodine 300 ps PALS laser with metallic plastic targets were measured use inductive probes. It is experimentally proven that duration return currents EMPs much longer than laser-target interaction. laser-produced plasma active after During this phase, acts as virtual cathode plasma-target interface expands. A double exponential function used in order to...
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. &#xD;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...
<title>Abstract</title> Cavity Pressure Acceleration (CPA) is a technique for accelerating dense plasma streams by utilizing laser-generated plasmapressure within spatially confined region. This approach has been proposed as an alternative to the classical ablativeacceleration of plasma. Initially, primary goal this was create stream (a theoretical macroparticle delivering energy/momentum) suitable experiments related Impact Fast Ignition. In recent experimentalsessions, we used targets...
The electromagnetic pulses (EMPs) generated during the interaction of a focused 1.315-μm sub-nanosecond laser pulse with solid hydrogen ribbon were measured. strength and temporal characteristics EMPs found to be dependent on target density. If low density is ionized laser, plasma does not physically touch holder, EMP weaker in shorter time duration. It shown that H2 experiment, strongly affect response fast electronic devices. measurements carried out by Rohde&Schwarz B-Probes,...
This paper describes the results of a series experiments conducted with PALS laser at intensities interest for shock ignition approach to inertial fusion.In particular, we addressed generation hot electrons (HE) (determining their average energy and number), as well parametric instabilities which are producing them.In addition, studied impact HE on formation dynamics strong shocks.
We experimentally demonstrate the generation of quasi-monoenergetic electron bunch at end energy distribution. The experiment was conducted Prague Asterix Laser System where iodine laser supplies up to 600 J fundamental wavelength 1.315 μm with a pulse duration 350 ps. thickness different target materials (Cu, Sn, Ta, Pb) varied between 10 and 25 μm. spectrum electrons measured using an array spectrometers angular directions respect axis. Three frame femtosecond interferometry driven by...
We present a series of experimental results, and their interpretation, connected to various aspects the hydrodynamics laser produced plasmas. Experiments were performed using Prague PALS iodine working at 0.44 μm wavelength irradiances up few 10 14 W/cm 2 . By adopting large focal spots smoothed beams, lateral energy transport expansion have been avoided. Therefore we could reach quasi one-dimensional regime for which results can be more easily properly compared available analytical models.
The first space-time resolved spontaneous magnetic field (SMF) measurements realized on Prague Asterix Laser System are presented. SMF was generated as a result of single laser beam (1.315 μm) interaction with massive planar targets made materials various atomic numbers (plastic and Cu). Measured confirmed azimuthal geometry their maximum amplitude reached the value 10 MG at energy 250 J for both target materials. It demonstrated that spatial distributions these fields associated character...
Parametric instabilities at laser intensities in the range (2–6) × 1015 W/cm2 (438 nm, 250 ps, 100–300 J) have been investigated planar geometry Prague Asterix Laser System facility via calorimetry and spectroscopy. The density scalelength of plasma was varied by using an auxiliary pulse to form a preplasma before arrival main beam changing delay between two pulses. Experimental data show that Stimulated Brillouin Scattering (SBS) is more effective than Raman (SRS) degrading laser-plasma...
A comparative study of photoionized plasmas created by two soft X-ray and extreme ultraviolet (SXR/EUV) laser plasma sources with different parameters is presented. The are based on double-stream Xe/He gas-puff targets irradiated high (500 J/0.3 ns) low energy (10 J/1 pulses. In both cases, the SXR/EUV beam gas stream, injected into a vacuum chamber synchronously radiation pulse. Irradiation gases resulted in formation emitting range. measured Ne spectra dominated emission lines...
We describe the characterization of electromagnetic pulses (EMPs) in experiments on solid targets at PALS laser facility Prague, for energy up to 600 J and intensity 1016 W cm−2 focus. Measurements EMPs have been performed by different conductive probes placed inside outside experimental chamber. show results probe configurations, illustrate effects spurious direct coupling these transient fields with read-out apparatus, which are important high-energy high-intensity laser-plasma...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation T. Pisarczyk, S. Yu. Gus'kov, Z. Kalinowska, J. Badziak, D. Batani, L. Antonelli, G. Folpini, Y. Maheut, F. Baffigi, Borodziuk, Chodukowski, Cristoforetti, N. Demchenko, A. Gizzi, Kasperczuk, P. Koester, E. Krousky, Labate, Parys, M. Pfeifer, O. Renner, Smid, Rosinski, Skala, R. Dudzak, Ullschmied, Pisarczyk;...
We report measurements of parametric instabilities and hot electron generation in a laser intensity regime up to 6 × 1015 W/cm2 , typical the shock ignition approach inertial fusion. Experiments performed at PALS laboratory Prague show that incident energy losses are dominated by Stimulated Brillouin Scattering (SBS) rather than Raman (SRS) or Two-Plasmon Decay (TPD). Results compared hydrodynamics simulations using code includes self-consistent calculations non-linear plasma interactions...
Context. Meteor spectra are commonly interpreted using data from databases and tables. Several studies have demonstrated very sophisticated calculations of elemental compositions meteoroid bodies based on the computation synthetic meteor or spectral analysis airglow plasma containing evaporated, atomized, ionized matter. However, considering accuracy, reliability computations, lack laboratory experimental in this field, as well complicated physical structure plasma, such qualitative...
We present the results of an experiment on laser-driven shock waves performed at Prague Asterix Laser system (PALS), where fundamental frequency laser (1315 nm) is used to launch a strong in planar geometry. The aims characterize both and hot electrons generated intensities ≃1016 W/cm2. It shown that, these interaction conditions, hydrodynamics strongly impacted by noncollisional mechanisms, role electrons, parametric instabilities, essential determining dynamics.
Abstract Terrestrial volcanism has been one of the dominant geological forces shaping our planet since its earliest existence. Its associated phenomena, like atmospheric lightning and hydrothermal activity, provide a rich energy reservoir for chemical syntheses. Based on laboratory simulations, we propose that early Earth volcanic activity inevitably led to remarkable production formic acid through various independent reaction channels. Large‐scale availability supports idea high‐temperature...
Abstract Laser plasma created by intense light interaction with matter plays an important role in high-energy density fundamental studies and many prospective applications. Terawatt laser-produced related to the low collisional relativistic domain may form supersonic flows is prone generation of strong spontaneous magnetic fields. The comprehensive experimental study presented this work provides a reference point for theoretical description laser-plasma interaction, focusing on hot electron...
In this paper we present Hugoniot data for plastic foams obtained with laser-driven shocks. Relative equation-of-state were using Al as a reference material. The diagnostics consisted in the detection of shock breakout from double layer Al/foam targets. [poly(4-methyl-1-pentene) density $130>\ensuremath{\rho}>60\phantom{\rule{0.3em}{0ex}}\mathrm{mg}∕{\mathrm{cm}}^{3}$] produced at Institute Laser Engineering Osaka University. experiment was performed Prague PALS iodine laser working...