scholarly journals Isochoric heating into the warm dense matter regime by laser-solid produced K-alpha x-rays

2003 ◽  
Author(s):  
Gilliss Dyer ◽  
Todd Ditmire ◽  
Ronnie Shepherd ◽  
Jaroslav Kuba ◽  
Dwight Price ◽  
...  
Keyword(s):  
Dense Matter ◽  
X Rays ◽  
Warm Dense Matter ◽  
Isochoric Heating

scholarly journals Idealized slab plasma approach for the study of warm dense matter

2005 ◽  
Vol 23 (4) ◽  
pp. 527-537 ◽  
Author(s):  
A. NG ◽  
T. AO ◽  
F. PERROT ◽  
M.W.C. DHARMA-WARDANA ◽  
M.E. FOORD
Keyword(s):  
Material Science ◽  
Inertial Confinement Fusion ◽  
Condensed Matter ◽  
Dense Matter ◽  
Inertial Confinement ◽  
Conductivity Equation ◽  
Warm Dense Matter ◽  
Interdisciplinary Field ◽  
Confinement Fusion ◽  
Isochoric Heating

Recently, warm dense matter has emerged as an interdisciplinary field that draws increasing interest in plasma physics, condensed matter physics, high pressure science, astrophysics, inertial confinement fusion, as well as material science under extreme conditions. To allow the study of well-defined warm dense matter states, we introduced the concept of idealized slab plasma (ISP) that can be realized in the laboratory via (1) the isochoric heating of a solid and (2) the propagation of a shock wave in a solid. The application of this concept provides new means for probing AC conductivity, equation of state, ionization, and opacity. These approaches are presented here using results derived from numerical simulations.

Supra-thermal electron beam stopping power and guiding in dense plasmas

2013 ◽  
Vol 79 (4) ◽  
pp. 429-435 ◽  
Author(s):  
JOÃO JORGE SANTOS ◽  
D. BATANI ◽  
S. D. BATON ◽  
F. N. BEG ◽  
T. CECCOTTI ◽  
...  
Keyword(s):  
Electron Beam ◽  
Fast Electron ◽  
Dense Matter ◽  
Stopping Power ◽  
Rear Side ◽  
X Rays ◽  
Warm Dense Matter ◽  
Thermal Electron ◽  
Dense Plasmas ◽  
Guided Propagation

AbstractFast-electron beam stopping mechanisms in media ranging from solid to warm dense matter have been investigated experimentally and numerically. Laser-driven fast electrons have been transported through solid Al targets and shock-compressed Al and plastic foam targets. Their propagation has been diagnosed via rear-side optical self-emission and Kα X-rays from tracer layers. Comparison between measurements and simulations shows that the transition from collision-dominated to resistive field-dominated energy loss occurs for a fast-electron current density ~5 × 1011 A cm−2. The respective increases in the stopping power with target density and resistivity have been detected in each regime. Self-guided propagation over 200μm has been observed in radially compressed targets due to ~1kT magnetic fields generated by resistivity gradients at the converging shock front.

Isochoric heating of foamed metal using pulsed power discharge as a making technique of warm dense matter

2012 ◽  
Vol 83 (8) ◽  
pp. 085107 ◽  
Author(s):  
Yusuke Amano ◽  
Yasutoshi Miki ◽  
Takuya Takahashi ◽  
Toru Sasaki ◽  
Takashi Kikuchi ◽  
...  
Keyword(s):  
Dense Matter ◽  
Pulsed Power ◽  
Warm Dense Matter ◽  
Isochoric Heating

scholarly journals Input Energy Control Using Electron Beam Diode as Impedance Controller to Study Warm Dense Matter by Pulsed Power Discharge with Isochoric Heating

2017 ◽  
Vol 12 (0) ◽  
pp. 1204024-1204024
Author(s):  
Tomoaki ITO ◽  
Ryota HAYASHI ◽  
Tomoki ISHITANI ◽  
Md. Shahed-Uz-ZAMAN ◽  
Kenji KASHINE ◽  
...  
Keyword(s):  
Electron Beam ◽  
Dense Matter ◽  
Pulsed Power ◽  
Input Energy ◽  
Warm Dense Matter ◽  
Energy Control ◽  
Isochoric Heating

scholarly journals Tracing X-ray-induced formation of warm dense gold with Boltzmann kinetic equations

2021 ◽  
Vol 75 (8) ◽  
Author(s):  
Beata Ziaja ◽  
John Jasper Bekx ◽  
Martin Masek ◽  
Nikita Medvedev ◽  
Przemyslaw Piekarz ◽  
...  
Keyword(s):  
Kinetic Equation ◽  
Kinetic Equations ◽  
Dense Matter ◽  
High Energy ◽  
Boltzmann Kinetic Equation ◽  
High Energy Density ◽  
X Rays ◽  
Equation Approach ◽  
Warm Dense Matter ◽  
X Ray

Abstract In this paper, we report on the Boltzmann kinetic equation approach adapted for simulations of warm dense matter created by irradiation of bulk gold with intense ultrashort X-ray pulses. X-rays can excite inner-shell electrons, which triggers creation of deep-lying core holes. Their relaxation, especially in heavier elements such as gold (atomic number $$Z= 79$$ Z = 79 ) takes complicated pathways, involving collisional processes, and leading through a large number of active configurations. This number can be so high that solving a set of evolution equations for each configuration becomes computationally inefficient, and another modeling approach should be used instead. Here, we use the earlier introduced ’predominant excitation and relaxation path’ approach. It still uses true atomic configurations but limits their number by restricting material relaxation to a selected set of predominant pathways for material excitation and relaxation. With that, we obtain time-resolved predictions for excitation and relaxation in X-ray irradiated bulk of gold, including the respective change of gold optical properties. We compare the predictions with the available data from high-energy-density experiments. Their good agreement indicates ability of the Boltzmann kinetic equation approach to describe warm dense matter created from high-Z materials after their irradiation with X rays, which can be validated in future experiments. Graphic Abstract

HARD X-RAYS AS A DIAGNOSTIC TOOL FOR WARM DENSE MATTER

2009 ◽  
Author(s):  
E. Brambrink ◽  
H. G. Wei ◽  
B. Barbrel ◽  
P. Audebert ◽  
A. Benuzzi ◽  
...  
Keyword(s):  
Diagnostic Tool ◽  
Dense Matter ◽  
X Rays ◽  
Warm Dense Matter
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