Johannes Hornung
(Technische Universität(TUDA))
21/06/2017, 16:00
Laser pulses of the highest intensities interact with sub-micrometer targets in conditions where hole boring and relativistic effects play a predominant role. These effects imprint a strong signature of the light being either transmitted or reflected by such targets. To fully understand the dynamics of the interaction, it is desirable to spectrally and temporally resolve the resulting...
Mr
Roman Gavrilin
(Institute of Theoretical and Experimental physics of NRC Kurchatov Institute)
21/06/2017, 16:00
This work devoted to developent of laser diagnostic methods for various experimental studies in HEDgeHOB collaboration. Doppler based velocimetry interferometers (VISAR) will be actively applied in studies of shock waves processes in proton radiography experiments PRIOR [1,2] and high energy density in matter experiments HIHEX and LAPLAS [3].
Mr
Sero Zaehter
(IAP Uni Frankfurt)
21/06/2017, 16:00
Intense uranium beams that will be available after commissioning of the new synchrotron SIS100 in
Darmstadt can be used for volumetric heating of any type of material and the generation of extreme states
of matter with Mbar pressures and some eV of temperature [1]. One of the main goals of the plamsma
physics program at FAIR is the investigation of the EOS. Due to a high level of parasitic...
Ms
Sofia A. Piriz
(Universidad de Castilla-La Mancha)
21/06/2017, 16:00
A physical model has been developed for the linear Rayleigh-Taylor instability of a finite thickness elastic slab that lays on the top a semi-infinite ideal fluid. The model includes the non-ideal effects of elasticity as boundary conditions at the top and bottom interfaces of the slab, and takes also into account the finite transit time of the elastic waves across the slab thickness. For...
Dr
Leonid Pugachev
(Joint Institute for Temperatures of the Russian Academy of Sciences)
21/06/2017, 16:00
3D PIC calculations were performed of the laser-plasma interaction relevant to the parameters of the PHELIX facility. In simulations, plasma layer had an overcritical density and rectangular profile. The laser pulse duration 10 times shorter in comparison with the PHELIX duration was also considered. These calculations do not take into account the effect of the pre-pulse. The simulations were...
John Farmer
(Uni Düsseldorf)
21/06/2017, 16:00
Raman amplification in plasma is a possible source of ultra-short, ultra-intense laser pulses. The use of plasma as a gain medium offers the potential to avoid the damage threshold associated with solid-state amplification media. However, wavebreaking and damping may act to limit amplification, while amplification of spontaneous scatter can destroy the quality of the amplified...
Prof.
Andrey Savel'ev
(Lomonosov Moscow State Univ.)
21/06/2017, 16:00
Electrons accelerated under action of relativistically intense laser pulses onto solids produce bremsstrah-lung X-rays and G-rays. This might happen inside a bulk target or by using special convertors – thick plates of W, Ta, Au, etc. The paper discusses two issues of gamma-ray production: (i) optimization of the interaction regime by target & preplasma design and (ii) gamma-ray detection...
Dr
Punit Kumar
(University of Lucknow, India)
21/06/2017, 16:00
The generation of harmonic radiation is significant in terms of laser-plasma interaction and has brought interesting notice due to the diversity of its applications. It has been remarked that second harmonic generation takes place in the presence of density gradient [1,2] which gives rise to perturbation in the electron density at the laser frequency. Second harmonic generation has also been...
Dr
Alexey Kantsyrev
(Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute»)
21/06/2017, 16:00
Existing proton radiography facilities, constructed according to the scheme of high-energy proton microscope with image magnification, in USA , Russia and Germany clearly demonstrated the advantages of the high-energy proton radiography method compared to conventional X-ray techniques in the study of solid objects and dense plasma, especially in dynamic experiments.
The new proton...
Dr
Piotr Raczka
(Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland)
21/06/2017, 16:00
Developing an accurate theory of charged particle stopping in dense and warm plasma which is mod-erately coupled and for which the electron component is partially degenerate is a fundamental chal-lenge. An improved approach to ion stopping in such plasmas is developed, where the partial electron degeneracy is treated within the dielectric function approach, with the effect of electron...
Mrs
Alla Zubareva
(IPCP RAS)
21/06/2017, 16:00
Research on shock wave processes provides information on thermodynamic and rheological properties of materials in a wide range of pressures and temperatures under conditions of high strain rates. Investigation of shock compression features of porous materials is of particular interest, since the experimental study of the same material at different densities can significantly expand the area of...
Masoud Afshari
(GSI, Darmstadt)
21/06/2017, 16:00
The relativistic interaction of laser pulses, intensities in excess of 1018 W/cm2, with solid targets has
been studied in many experiments aiming for different application. One of the prominent applications
is laser-driven ion acceleration which is of particular interest for Helmholtz Association and for
applications driven by upcoming FAIR facilities.
One of the well accepted mechanisms...
Dr
Claudia-Veronika Meister Meister
(Technische Universität Darmstadt)
21/06/2017, 16:00
In plasmas generated by ion or laser beams, often different layers do not move with the same velocity. Under such conditions, the plasma may become instable. One of the most important instabilities that occurs in a fluid with a velocity gradient which is normal to the plasma flow is the Kelvin-Helmholtz instability (KHI). If the velocity gradient is, moreover, directed parallel to the gravity...
Prof.
Silviu Gurlui
(Alexandru Ioan Cuza University of Iasi)
21/06/2017, 16:00
Laser produced plasma plumes created by nanosecond laser ablation on both metallic and complex weathering architectural objects were investigated through space-and time-resolved electrical and optical emission spectroscopy.
In order to describe the spatial and temporal evolution of the plasma parameters that define the dynamic of the laser produced plasma plume (electron temperature,...
Dr
Konstantin Gubskiy
(MEPhI)
21/06/2017, 16:00
The paper presents the diagnostic system for velocity measurements of reflecting objects, designed for integration into the “Luch” laser facility
Mrs
samira Tajik nezhad
(Department of Physics and Institute for Plasma Research, Kharazmi University, Tehran , Iran)
21/06/2017, 16:00
Magnetorotational Instability in Collisional Weakly Ionized and Magnetized Electron-Positron-Ion Plasmas
S. Tajik-Nezhad, F. Azadnia, K. Hajisharifi, H. Mehdian
Department of Physics and Institute for Plasma Research, Kharazmi University, Tehran, Iran
The rotating plasma instabilities especially magnetorotational instability (MRI) have been the subject of considerable investigations in...
Mr
Aleksei Skobliakov
(Institute for Theoretical and Experimental Physics of NRC «Kurchatov Institute», Moscow, Russia;)
21/06/2017, 16:00
The high-energy proton radiography in the investigations of dense dynamic target provides greater penetration depth, spatial resolution, density resolution and dynamic range than conventional X-Ray methods.
The high-energy proton microscopy facilities PRIOR-II (2-5 GeV beam energy) will be one of the key diagnostic tool for HEDP experiments at FAIR project, also the scheme of 247 MeV proton...
Dr
Steffen Faik
(Institute for Applied Physics, Goethe University Frankfurt am Main)
21/06/2017, 16:00
Multidimensional codes, which combine the solution of the fundamental hydrodynamic equations with the spectral transfer equation for thermal radiation and with an accurate scheme for thermal conduction, provide an indispensable tool for the design and the analysis of experiments as well as for the understanding of physical phenomena at high energy density. The main motivation for the...
Ms
Anja Katharina Schuster
(Helmholtz-Zentrum Dresden-Rossendorf)
21/06/2017, 16:00
Introduction
We are interested in the internal, chemistry-rich structure of the giant planets of our solar system and be-yond. Using high energy lasers to shock compress samples of tens of micrometres, we can reach the ex-treme conditions that are present within those planets. Namely, more than a million times Earth’s atmos-pheric pressure and temperatures of thousands of Kelvins, which are...
Mr
Vsevolod Panyushkin
(ITEP)
21/06/2017, 16:00
As the result of the first experiment with 3.6 GeV proton beam at PRIOR facility at GSI [1] it was found that the parameters of permanent magnetic quadrupoles (PMQ) [2] lenses was changed. For the analysis of radiation damage of PMQ its magnetic field was rescanned. The gradient of magnetic field is decreased of about 10%, there was a decrease in the quadrupole magnetic field component with an...
Dr
Sergey Ananyev
(NRC Kurchatov institute (НИЦ Курчатовский институт))
21/06/2017, 16:00
Nowadays, experiments on the generation and study of the dynamics of plasma jets at the stand PF-3 (National Research Center «Kurchatov Institute») are performed. The measurement of their parameters can be useful to elaborate the physical model for astrophysical jets propagating for a giant distances. Temperature and concentration of plasma as functions versus time are measured by...
Ms
Ekaterina Zakatilova
(Joint Institute for High Temperature of the Russian Academy of Sciences)
21/06/2017, 16:00
The point defects of the crystal lattice form under the ions irradiation. The matter structure is changing. The gradients of the concentrations of point defects and impurity atoms disrupt the thermodynamic equilibrium conditions. Implantations of ions in crystal lattice correspond to free energy increasing. This leads to the change of the phase stability. The phase transition may occur in the...
Ms
Daria Pugacheva
(JIHT RAS)
21/06/2017, 16:00
Ultrarelativistic electrons emit X-ray radiation, which can be used as a diag-
nostic tool in experiments with high-energy-density states of matter [1]. In this
work an acceleration process of polarized electron beams [2] is analyzed in the
wakeeld generated by a short high-intensity laser pulse in a preformed plasma
channel. An initial density prole of plasma electrons in the channel is...
Dr
Marjan MahdaviGharavi
(Researcher)
21/06/2017, 16:00
The influence of elliptical vortex on low frequency collective modes in a viscoelastic dusty plasma is analyzed using the generalized hydrodynamic equation (GH). Recalling the local approximation method, the space dependent terms (arising from the equilibrium flows) can be described. In the limit ω≫k_x v_0x or ω≫k_y v_0y, it is shown that the correlation effects (viscosity(η) and collision...
Mr
Vural Kaymak
(Heinrich Heine Universität Düsseldorf)
21/06/2017, 16:00
The creation of ultra-high energy density (UHED, >1x10^8 J/cm³) plasmas in compact laboratory setups enables studies
of matter under extreme conditions and can be used for the efficient generation of intense x-ray and neutron pulses. An
accessible way to achieve the UHED regime is the irradiation of vertically aligned high-aspect-ratio nanowire arrays
with relativistic femtosecond laser...
Dr
Vladimir Efremov
(JIHT RAS)
21/06/2017, 16:00
Data on experimental study of ultrafast volume destruction in the optical fibers are analyzed. Under laser action the destruction zone of quartz optical fibers (the plasma zone) occurs and spreads towards the radiation [1]. When the plasma zone moves the caver quartz optical fiber breaks down. The attention of this work was directed to the investigation of destruction at laser supported...
