A5032010441- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Laser-Matter Interactions and Applications
- High-pressure geophysics and materials
- Vacuum and Plasma Arcs
- Atomic and Molecular Physics
- Laser Material Processing Techniques
- Magnetic confinement fusion research
- Advanced X-ray Imaging Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Solar and Space Plasma Dynamics
- Diamond and Carbon-based Materials Research
- Ionosphere and magnetosphere dynamics
- Ocular and Laser Science Research
- Plasma Applications and Diagnostics
- Radiation Detection and Scintillator Technologies
- Geomagnetism and Paleomagnetism Studies
- Crystallography and Radiation Phenomena
- Ion-surface interactions and analysis
- Radiation Therapy and Dosimetry
- Bartonella species infections research
- Photocathodes and Microchannel Plates
- Solid State Laser Technologies
- Metal and Thin Film Mechanics
- Advanced materials and composites
Joint Institute for High Temperatures
2016-2024
Joint Institute for Nuclear Research
2024
Moscow Engineering Physics Institute
2013-2021
Osaka University
2017
National Institutes for Quantum Science and Technology
2017
Japan Science and Technology Agency
2017
Kyushu University
2017
Moscow Power Engineering Institute
2015
Moscow Aviation Institute
2015
In this paper, high temperature (~10 keV) solid density silver plasma is generated experimentally by exposing a thin foil to the extreme fields of tightly focused high-power laser. The authors demonstrate that such an efficient source highly charged, energy heavy ions, with generation ultra-strong electric
Acceleration of particles from the interaction ultraintense laser pulses up to 5×10^{21} W cm^{-2} with thin foils is investigated experimentally. The electron beam parameters varied decreasing spot size, not just intensity, resulting in reduced temperatures and divergence. In particular, temperature saturated due insufficient acceleration length tightly focused spot. These dependencies affected sheath-accelerated protons, which showed poorer spot-size scaling than widely used laws. It...
The generation of a plasma with an ultrahigh energy density 1.2 GJ/cm3 (which corresponds to about 12 Gbar pressure) is investigated by irradiating thin stainless-steel foils high-contrast femtosecond laser pulses relativistic intensities up 1022 W/cm2. parameters are determined X-ray spectroscopy. results show that most the absorbed at solid density, indicating no pre-plasma generated in current experimental setup.
A high repetition rate scintillator-based transverse beam profile diagnostic for laser-plasma accelerated proton beams has been designed and commissioned. The profiler uses differential filtering to provide coarse energy resolution a flexible design allow optimisation expected range trade-off between spatial depending on the application. plastic scintillator detector, imaged with standard 12-bit scientific camera, allows data be taken at rate. An algorithm encompassing non-linearity is...
By analyzing profiles of experimental x-ray spectral lines Si XIV and Al XIII, we found that both Langmuir ion acoustic waves developed in plasmas produced via irradiation thin foils by relativistic laser pulses (intensities ~10 21 W/cm 2 ).We prove these are due to the parametric decay instability (PDI).This is first time PDI-induced turbulence was discovered spectroscopy laserproduced plasmas.These conclusions also supported PIC simulations.Our results can be used for laboratory modeling...
We report on the spectra of x-rays emitted from dense plasma generated via irradiation thin stainless steel foils by ultra-relativistic femtosecond laser pulses (intensities ~3 × 1021 W/cm2). Kinetic modelling was used to estimate electron density and temperature, demonstrating Te ~2.1 keV for Ne ~5 1022 cm−3 in hottest emission region. Thus, it is experimentally demonstrated first time that pulse over W/cm2 intensity absorbed neither solid nor a pre-plasma common critical density, but...
We report on the first observation of high-n hollow ions (ions having no electrons in K or L shells) produced Si targets via pumping by ultra-intense x-ray radiation intense laser-plasma interactions reaching dominant kinetics regime.The existence these new types high energy density plasma has been found highly-resolved emission spectra silicon plasma, and confirmed calculations, underscoring ability powerful sources to fully strip from inner-most shells light atoms.Hollow spectral...
Abstract The source of X-ray radiation with the energy quanta that may vary in range hν = 1÷12 keV was developed for studies interaction matter and modification solid surfaces. It based on a vacuum spark discharge laser triggering. shown our experiments there is possibility to adjust spectrum by changing configuration electrode system when stored capacitor varied within 1÷17 J. A comprehensive study imaging carried out. These were out case both direct reverse polarity voltage electrodes....
An experimental investigation of collisionless shock ion acceleration is presented using a multicomponent plasma and high-intensity picosecond duration laser pulse. Protons are the only accelerated ions when near-critical-density driven by with modest normalized vector potential. The results particle-in-cell simulations imply that may accelerate protons alone selectively, which can be an important tool for understanding physics inaccessible shocks in space astrophysical plasma.
By the example of an X-ray spectrometer with a spherically bent mica crystal we consider diagnostic errors entailed when observed bremsstrahlung spectrum is attributed to single reflection. As illustration choose emission plasma produced at surface steel foil by femtosecond laser pulses relativistic intensity. It shown that obtaining adequate results in case high-temperature calls for consistent inclusion all orders reflection or diffraction dispersing device.
We present X-ray spectroscopic diagnostics in femto-second laser-driven experiments revealing nonlinear phenomena caused by the strong coupling of laser radiation with created plasma. Among those phenomena, we found signatures Two Plasmon Decay (TPD) instability a CO2 cluster-based plasma analyzing Langmuir dips profile O VIII Lyε line, waves at high intensity 3 1018Wcm-2. With similar intensities, reveal also phenomenon Second Harmonic Generation (SHG) frequency satellites Lyman δ and ε...
We report about nonlinear growth of x-ray emission intensity emitted from plasma generated by femtosecond petawatt laser pulses irradiating stainless steel foils. X-ray increases as ∼ I4.5 with I on a target. High spectrally resolved front and rear surfaces 5 μm thickness targets were obtained at the wavelength range 1.7–2.1 Å, for first time in experiments facility J-KAREN-P. Total spectra three times dominates to side maximum ≈ 3.2×1021 W/cm2. Growth is mostly determined contribution...
Mica crystals are widely applied in x-ray spectroscopy diagnostics since their ability to effectively reflect the radiation different orders covering a wide range of photon energy, including sub-keV hardly accessible with other crystals. Particularly, spherically bent mica commonly used high energy density plasma imaging spectrometry diagnostics. However, detailed reflectivity properties not known well. Here we propose and verify way calibrate crystal spectral experiment relativistic laser...
The source of X-ray radiation with quantum energy in the range hν = 1÷10 keV was developed for interaction x-ray matter and modification solid surface. It based on vacuum spark discharge laser-triggering. comprehensive study X-rays imaging, temporal characteristics carried out. Correlated estimates temperature investigated plasma moderate powerful were obtained using two methods case low-stored (E≤1 J).
Gamma rays consist of high-energy photons that selectively interact with nuclei, induce and mediate nuclear reactions elementary particle interactions, exceed x-rays in penetrating power thus are indispensable for analysis modification dense or compressed object interior. Yet, the available gamma sources lack brightness which, if available, would revolutionize science technology. The predicted laser-driven Flash (GF) be highest-power brightest terrestrial source a 30-40% laser-to-gamma...
An experimental investigation of collisionless shock ion acceleration is presented using a multicomponent plasma and high-intensity picosecond duration laser pulse. Protons are the only accelerated ions when near-critical-density driven by with modest normalized vector potential. The results particle-in-cell simulations imply that may accelerate protons alone selectively, which can be an important tool for understanding physics inaccessible shocks in space astrophysical plasma.
In the paper, an X-ray spectroscopy-based approach on laser pulse temporal profile characterization is described. The structure of dielectronic satellites to H-like Lyα lines strongly depends a plasma electron density, so it can be applied for diagnostics. These spectral are mainly emitted during initial stage expansion. It means that parameters obtained via them characterizes matter conditions in region surrounding spot laser-matter interaction. case when contrast high enough, radiation...