Use of Pulsed Radiography for Investigation of Equations of State of Substances at Megabar Pressures

Egorov, N.I.; Boriskov, G. V.; Bykov, A. I.; Kuropatkin, Yu. P.; Lukyanov, N.B.; Mironenko, V.D.; Павлов, В. А.

doi:10.1002/ctpp.201010123

Cited by 13 publications

(4 citation statements)

References 5 publications

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“…1b) coincident with the radius of investigated sample. The used method [27,28] allows us to measure these values with the precision up to hundredth of millimeters. Characteristic values of the measured radii themselves lie in the range of 1.5 ÷ 6 mm.…”

Section: Selection Of Initial Geometry and X-radiography Resultsmentioning

confidence: 99%

Isentropic Compression of Substances Using Ultra‐High Magnetic Field: Zero Isotherms of Protium and Deuterium in Pressure Range up to ∼5 Mbar

Boriskov¹,

Быков²,

Egorov³

et al. 2011

Contrib. Plasma Phys.

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Experiments on isentropic compression of a substance using a high magnetic field pressure are described. Their goal is building of a zero isotherm in a multi-megabar pressures range. A method of the pressure and density determination of the compressed substance based on radiographic data obtained in the experiment is presented. The results of the experiments with solid (in initial state) protium and deuterium are presented. The densities that correspond to more than seventeen-fold compression are reached. Obtained experimental points are compared with extrapolation of a curve that is built in the experiments using anvil cells and with the results of several ab-initio calculations.

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Section: Selection Of Initial Geometry and X-radiography Resultsmentioning

confidence: 99%

Isentropic Compression of Substances Using Ultra‐High Magnetic Field: Zero Isotherms of Protium and Deuterium in Pressure Range up to ∼5 Mbar

Boriskov¹,

Быков²,

Egorov³

et al. 2011

Contrib. Plasma Phys.

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“…One such site features three small triple-pulse machines [62], which can provide a total of nine radiographs from different directions at different times [63].…”

Section: Pulsed Air-core Betatronsmentioning

confidence: 99%

Particle Beam Radiography

Peach

Ekdahl

2013

Rev. Accl. Sci. Tech.

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Particle beam radiography, which uses a variety of particle probes (neutrons, protons, electrons, gammas and potentially other particles) to study the structure of materials and objects noninvasively, is reviewed, largely from an accelerator perspective, although the use of cosmic rays (mainly muons but potentially also high-energy neutrinos) is briefly reviewed. Tomography is a form of radiography which uses multiple views to reconstruct a three-dimensional density map of an object. There is a very wide range of applications of radiography and tomography, from medicine to engineering and security, and advances in instrumentation, specifically the development of electronic detectors, allow rapid analysis of the resultant radiographs. Flash radiography is a diagnostic technique for large high-explosive-driven hydrodynamic experiments that is used at many laboratories. The bremsstrahlung radiation pulse from an intense relativistic electron beam incident onto a high-Z target is the source of these radiographs. The challenge is to provide radiation sources intense enough to penetrate hundreds of g/cm 2 of material, in pulses short enough to stop the motion of high-speed hydrodynamic shocks, and with source spots small enough to resolve fine details. The challenge has been met with a wide variety of accelerator technologies, including pulsed-power-driven diodes, air-core pulsed betatrons and high-current linear induction accelerators. Accelerator technology has also evolved to accommodate the experimenters' continuing quest for multiple images in time and space. Linear induction accelerators have had a major role in these advances, especially in providing multiple-time radiographs of the largest hydrodynamic experiments.

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“…Shock compression of gases is one of the common techniques of generation of a non-ideal plasma. The density of shock-compressed plasma is usually defined by x-ray pulse radiography [2] or derived from the conservation laws by the measured kinematic parameters of the gas-dynamic flow [3]. Typical accuracy of density determination of single shock-compressed gaseous xenon by the measured velocities of shock wave and compressed gas was presented in [4], the estimates gave the values about 7-18%.…”

Section: Introductionmentioning

confidence: 99%

Explosive shock tube of xenon non-ideal plasma for proton radiography

Shilkin

Yuriev

Минцев

2019

J. Phys.: Conf. Ser.

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A high explosive shock tube of non-ideal gaseous plasma for proton radiography is described. The gas dynamic flow in the shock compressed xenon at initial pressure of 7 bar was investigated in the tube. The velocity of the shock wave in xenon and the associated particle velocity were measured by a high-speed rotating mirror streak camera. Experimental timedistance data was used for approximation of the velocities by exponential decay functions. The shock tube is intended for generation of non-ideal plasma of xenon at the pressure of 5-12 kbar, the density of 0.24-0.3 g/cm 3 when the initial pressure is about 7 bar.

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Use of Pulsed Radiography for Investigation of Equations of State of Substances at Megabar Pressures

Cited by 13 publications

References 5 publications

Isentropic Compression of Substances Using Ultra‐High Magnetic Field: Zero Isotherms of Protium and Deuterium in Pressure Range up to ∼5 Mbar

Isentropic Compression of Substances Using Ultra‐High Magnetic Field: Zero Isotherms of Protium and Deuterium in Pressure Range up to ∼5 Mbar

Particle Beam Radiography

Explosive shock tube of xenon non-ideal plasma for proton radiography

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