Change in Inertial Confinement Fusion Implosions upon Using an Ab Initio Multiphase DT Equation of State

Journal Article · Fri Sep 09 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.115004· OSTI ID:21611770

Caillabet, L; Canaud, B; Salin, G; Mazevet, S; Loubeyre, P ^[1]

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1. CEA, DAM, DIF, F-91297 Arpajon (France)

Improving the description of the equation of state (EOS) of deuterium-tritium (DT) has recently been shown to change significantly the gain of an inertial confinement fusion target [S. X. Hu et al., Phys. Rev. Lett. 104, 235003 (2010)]. Here we use an advanced multiphase EOS, based on ab initio calculations, to perform a full optimization of the laser pulse shape with hydrodynamic simulations starting from 19 K in DT ice. The thermonuclear gain is shown to be a robust estimate over possible uncertainties of the EOS. Two different target designs are discussed, for shock ignition and self-ignition. In the first case, the areal density and thermonuclear energy can be recovered by slightly increasing the laser energy. In the second case, a lower in-flight adiabat is needed, leading to a significant delay (3 ns) in the shock timing of the implosion.

• OSTI ID: 21611770
• Journal Information: Physical Review Letters, Vol. 107, Issue 11; Other Information: DOI: 10.1103/PhysRevLett.107.115004; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEUTERIUM
EQUATIONS OF STATE
ICE
IGNITION
IMPLOSIONS
INERTIAL CONFINEMENT
LASERS
OPTIMIZATION
PULSE SHAPERS
SIMULATION
TRITIUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CONFINEMENT
ELECTRONIC CIRCUITS
EQUATIONS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PLASMA CONFINEMENT
PULSE CIRCUITS
RADIOISOTOPES
SIGNAL CONDITIONERS
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES