TITLE

Gain curves and hydrodynamic modeling for shock ignition

AUTHOR(S)
Lafon, M.; Ribeyre, X.; Schurtz, G.
PUB. DATE
May 2010
SOURCE
Physics of Plasmas;May2010, Vol. 17 Issue 5, p052704
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Ignition of a precompressed thermonuclear fuel by means of a converging shock is now considered as a credible scheme to obtain high gains for inertial fusion energy. This work aims at modeling the successive stages of the fuel time history, from compression to final thermonuclear combustion, in order to provide the gain curves of shock ignition (SI). The leading physical mechanism at work in SI is pressure amplification, at first by spherical convergence, and by collision with the shock reflected at center during the stagnation process. These two effects are analyzed, and ignition conditions are provided as functions of the shock pressure and implosion velocity. Ignition conditions are obtained from a non-isobaric fuel assembly, for which we present a gain model. The corresponding gain curves exhibit a significantly lower ignition threshold and higher target gains than conventional central ignition.
ACCESSION #
51059808

 

Related Articles

  • Compression and combustion of non-cryogenic targets with a solid thermonuclear fuel for inertial fusion. Gus'kov, S.; Zmitrenko, N.; Sherman, V. // Journal of Experimental & Theoretical Physics;Apr2013, Vol. 116 Issue 4, p673 

    Variants of a target with a solid thermonuclear fuel in the form of deuterium-tritium hydrides of light metals for an inertial fusion have been proposed. The laser-pulse-induced compression of non-cryogenic targets, as well as ignition and combustion of such targets, has been examined. The...

  • One-dimensional planar hydrodynamic theory of shock ignition. Nora, R.; Betti, R. // Physics of Plasmas;Aug2011, Vol. 18 Issue 8, p082710 

    A one-dimensional planar compressible-piston-like model is used to investigate the basic physics behind shock-ignition inertial confinement fusion implosions. We discuss the theoretical limit set by rarefaction waves on the maximum hot-spot pressure achievable through conventional compression....

  • Ion pressure induced bending of the virtual-cathode in multistage ion diodes. Slutz, Stephen A. // Physics of Plasmas;Aug98, Vol. 5 Issue 8, p3021 

    Examines the role of ion pressure force in virtual-cathode bending as the inertial confinement fusion target. Calculations of virtual-cathode shape from ion pressure; Formula for effective focal length resulting from the bending; Importance of the relationship between accelerating voltage...

  • Hydrodynamic relations for direct-drive fast-ignition and conventional inertial confinement fusion implosions. Zhou, C. D.; Betti, R. // Physics of Plasmas;Jul2007, Vol. 14 Issue 7, p072703 

    Relations between stagnation and in-flight phases are derived both analytically and numerically, for hydrodynamic variables relevant to direct-drive inertial confinement fusion implosions. Scaling laws are derived for the stagnation values of the shell density and areal density and for the...

  • Fast ignition of inertial confinement fusion targets. Gus'kov, S. // Plasma Physics Reports;Jan2013, Vol. 39 Issue 1, p1 

    Results of studies on fast ignition of inertial confinement fusion (ICF) targets are reviewed. The aspects of the fast ignition concept, which consists in the separation of the processes of target ignition and compression due to the synchronized action of different energy drivers, are...

  • Effect of inactive impurities on the burning of ICF targets. Gus'kov, S.; Il'in, D.; Sherman, V. // Plasma Physics Reports;Dec2011, Vol. 37 Issue 12, p1020 

    The efficiency of thermonuclear burning of the spherical deuterium-tritium (DT) plasma of inertial confinement fusion (ICF) targets in the presence of low- Z impurities (such as lithium, carbon, or beryllium) with arbitrary concentrations is investigated. The effect of impurities produced due to...

  • Absolute calibration method for laser megajoule neutron yield measurement by activation diagnostics. Landoas, Olivier; Yu Glebov, Vladimir; Rossé, Bertrand; Briat, Michelle; Disdier, Laurent; Sangster, Thomas C.; Duffy, Tim; Marmouget, Jean Gabriel; Varignon, Cyril; Ledoux, Xavier; Caillaud, Tony; Thfoin, Isabelle; Bourgade, Jean-Luc // Review of Scientific Instruments;Jul2011, Vol. 82 Issue 7, p073501 

    The laser megajoule (LMJ) and the National Ignition Facility (NIF) plan to demonstrate thermonuclear ignition using inertial confinement fusion (ICF). The neutron yield is one of the most important parameters to characterize ICF experiment performance. For decades, the activation diagnostic was...

  • Effect of the laser wavelength: A long story of laser-plasma interaction physics for Inertial Confinement Fusion Teller Medal Lecture. Labaune, Christine // EPJ Web of Conferences;2013, Issue 59, p1 

    Laser-driven Inertial Confinement Fusion (ICF) relies on the use of high-energy laser beams to compress and ignite a thermonuclear fuel with the ultimate goal of producing energy. Fusion is the holy grail of energy sources-combining abundant fuel with no greenhouse gas emissions, minimal waste...

  • Integrated simulations of implosion, electron transport, and heating for direct-drive fast-ignition targets. Solodov, A. A.; Anderson, K. S.; Betti, R.; Gotcheva, V.; Myatt, J.; Delettrez, J. A.; Skupsky, S.; Theobald, W.; Stoeckl, C. // Physics of Plasmas;May2009, Vol. 16 Issue 5, p056309 

    A thorough understanding of future integrated fast-ignition experiments combining compression and heating of high-density thermonuclear fuel requires hybrid (fluid+particle) simulations of the implosion and ignition process. Different spatial and temporal scales need to be resolved to model the...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics