High energy ion generation (energy in order of 10 Gev) have been estimated by interaction of
picosecond laser pulses with an intensity of 6x1014 W/cm2 with metallic target in vacuum and gas atmosphere. In this
paper we shall discuss the production of very high magnetic fields by flux compression in laser-induced plasmas and
show experimental results on particle acceleration due to an explosively collapsed magnetic fields. Different nuclear
track detectors have been used for heavy charged particle identification: synthetic mica, plastic nuclear detector CR-39,
and glasses. Magnetic fields generated in laser-induced plasmas of order 30 -130 MGauss have been estimated by means
of Faraday rotation and interferometric diagnostics with high temporal and spatial resolution.
The direct observation of gamma-ray laser radiation on wavelength λ ≈ 0.2 nm have been carried out
from tantalum-181 plasma, produced by picosecond ND:YAG laser (under an additional influence of external electric
field and without them). It had been established that duration of such radiation in mode of ASR ("Amplification of
Spontaneous Radiation") approximately equals 1-3 ns on the background of isotropic distribution of intensity the
strongly directed components along micro plasma jets. Such gamma-ray laser radiation penetrates throw Be-filter
(thickness 130 μm) from vacuum chamber into atmosphere, where the gamma-holograms were produced in closed box.
So the coherence of generated gamma-ray radiation can be confirmed by the first our gamma-holograms production. Few
examples of gamma-holograms and its images of different micro objects are considered. The constructed compact
gamma-ray facility and developed gamma-ray holographic method will be very useful to experimental investigations in
area of microbiology, genetics and etc.
The present paper deals with the creation of a new mathematical model for 2D-computer simulation of the axisymmetrical radiative plasma magnitohydrodynamics (MHD) flows under vacuum spark discharge. In difference with the earlier works we use not only one but also two temperature approximation and take into consideration not only electrical but also magnetic fields in equation's system of the mathematical model. Created MHD-model is based on implicit full conservative difference scheme in combined Eulerian and Lagrangian approach. The system of difference equations is solved by using of Newton-like iteration procedure. Groups of equations are selected in accordance with the similar character of physical processes and the energy balance calculation is carried out for the convergence control.
Directed energy flows (DEF), including a High Power ion beams (PIB), are used in different areas of science, engineering and technology. For example, very worth-while is the use of PIB for: the realization of inertial controlled fusion, pumping up gas lasers, the investigations in the area of nuclear physics and energy high density physics, the formation of powerful pulse sources of X-ray and neutron radiation, ion alloying of metals and making surfaces, which improve physical and chemical properties of metals (enlargement of their hardness, corrosion, stability, etc.). The simulation of interaction processes of X-ray radiation with the matter now becomes more actual because of the progress in physics of short length wave laser. High cost and difficulties of the experiments and also the difficulties to get fast changing physical parameters in the area of the DEF--interaction with the target make it necessary to carry out a preliminary computer simulations for the evaluation of the expected physical parameters and the very expediency of such physical experiment. The examples and results of such mathematical simulation on dynamics of intensive pulse actions on metal targets by DEF (high-power ion beams, sharped - charged jets, hypervelocity projectiles, X-ray radiation), are represented in this paper with brief description of used computer models, worked out by High Energy Density Research Center (Russia).
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