Collision of plane thermonuclear detonation waves in a preliminarily compressed DT mixture
Abstract
The paper deals with a onedimensional problem on symmetric irradiation of a plane DT fuel layer with a thickness 2H and density ρ{sub 0} ⩽ 100ρ{sub s} (where ρ{sub s} is the density of the DT fuel in the solid state at atmospheric pressure and a temperature of 4 K) by two identical monoenergetic proton beams with a kinetic energy of 1 MeV, an intensity of 10{sup 19} W/cm{sup 2}, and a duration of 50 ps. The problem is solved in the framework of onefluid twotemperature hydrodynamic model that takes into account the equation of state for hydrogen, electron and ion heat conductivities, kinetics of the DT reaction, plasma selfradiation, and plasma heating by αparticles. The irradiation of the fuel results in the appearance of two counterpropagating detonation waves to the fronts of which rarefaction waves are adjacent. The efficiency of the DT reaction after the collision (reflection from the plane of symmetry) of the detonation waves depends on the spatial homogeneity of thermodynamic functions between the fronts of the reflected detonation waves. At Hρ{sub 0} ≈ 1 g/cm{sup 2}, the gain factor is G ≈ 200, whereas at Hρ{sub 0} ≈ 5 g/cm{sup 2}, it is G > 2000.more »
 Authors:
 Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
 Russian Academy of Sciences, Dorodnicyn Computing Center (Russian Federation)
 Publication Date:
 OSTI Identifier:
 22472422
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Plasma Physics Reports; Journal Volume: 41; Journal Issue: 3; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALPHA PARTICLES; BURNUP; DENSITY; DETONATION WAVES; DT OPERATION; ELECTRONS; EQUATIONS OF STATE; GAIN; IRRADIATION; KINETIC ENERGY; LAYERS; MEV RANGE; PLASMA; PLASMA HEATING; PROTON BEAMS; THERMONUCLEAR IGNITION
Citation Formats
Khishchenko, K. V., Email: konst@ihed.ras.ru, and Charakhch’yan, A. A., Email: chara@ccas.ru. Collision of plane thermonuclear detonation waves in a preliminarily compressed DT mixture. United States: N. p., 2015.
Web. doi:10.1134/S1063780X15020051.
Khishchenko, K. V., Email: konst@ihed.ras.ru, & Charakhch’yan, A. A., Email: chara@ccas.ru. Collision of plane thermonuclear detonation waves in a preliminarily compressed DT mixture. United States. doi:10.1134/S1063780X15020051.
Khishchenko, K. V., Email: konst@ihed.ras.ru, and Charakhch’yan, A. A., Email: chara@ccas.ru. 2015.
"Collision of plane thermonuclear detonation waves in a preliminarily compressed DT mixture". United States.
doi:10.1134/S1063780X15020051.
@article{osti_22472422,
title = {Collision of plane thermonuclear detonation waves in a preliminarily compressed DT mixture},
author = {Khishchenko, K. V., Email: konst@ihed.ras.ru and Charakhch’yan, A. A., Email: chara@ccas.ru},
abstractNote = {The paper deals with a onedimensional problem on symmetric irradiation of a plane DT fuel layer with a thickness 2H and density ρ{sub 0} ⩽ 100ρ{sub s} (where ρ{sub s} is the density of the DT fuel in the solid state at atmospheric pressure and a temperature of 4 K) by two identical monoenergetic proton beams with a kinetic energy of 1 MeV, an intensity of 10{sup 19} W/cm{sup 2}, and a duration of 50 ps. The problem is solved in the framework of onefluid twotemperature hydrodynamic model that takes into account the equation of state for hydrogen, electron and ion heat conductivities, kinetics of the DT reaction, plasma selfradiation, and plasma heating by αparticles. The irradiation of the fuel results in the appearance of two counterpropagating detonation waves to the fronts of which rarefaction waves are adjacent. The efficiency of the DT reaction after the collision (reflection from the plane of symmetry) of the detonation waves depends on the spatial homogeneity of thermodynamic functions between the fronts of the reflected detonation waves. At Hρ{sub 0} ≈ 1 g/cm{sup 2}, the gain factor is G ≈ 200, whereas at Hρ{sub 0} ≈ 5 g/cm{sup 2}, it is G > 2000. As applied to a cylindrical target that is ignited from ends and in which the cylinder with the fuel is surrounded by a heavy magnetized shell, the obtained values of the burnup and gain factors are maximum possible. To estimate the ignition energy E{sub ig} of a cylindrical target by using solutions to the onedimensional problem, a quasionedimensional model is developed. The model assumes that the main mechanism of target ignition is fuel heating by αparticles. The trajectories of αparticles are limited by a cylindrical surface with a given radius, which is a parameter of the model and is identified with the fuel radius in the target and the radii of the irradiating proton beams. This model reproduces the wellknown theoretical dependence E{sub ig} ∼ ρ{sub 0}{sup −2} and yields E{sub ig} = 160 kJ as a lower estimate of the ignition energy for ρ{sub 0} = 100ρ{sub s} ≈ 22 g/cm{sup 3}.},
doi = {10.1134/S1063780X15020051},
journal = {Plasma Physics Reports},
number = 3,
volume = 41,
place = {United States},
year = 2015,
month = 3
}

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