The role of nuclear reactions and {alpha}-particle transport in the dynamics of inertial confinement fusion capsules

Journal Article · Wed Oct 15 00:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2988333· OSTI ID:21254545

Garnier, Josselin ^[1]; Cherfils-Clerouin, Catherine ^[2]

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1. Laboratoire de Probabilites et Modeles Aleatoires and Laboratoire Jacques-Louis Lions, Universite Paris VII, 2 Place Jussieu, 75251 Paris Cedex 05 (France)
2. Commissariat a l'Energie Atomique, Direction des Applications Militaires, Boite Postale 12, 91680 Bruyeres le Chatel (France)

This paper is devoted to the study of the deceleration phase of inertial confinement capsules. The purpose is to obtain a zero-dimensional model that has the form of a closed system of ordinary differential equations for the main hydrodynamic quantities. The model takes into account the energy released by nuclear reactions, a nonlocal model for the {alpha}-particle energy deposition process, and radiation loss by electron bremsstrahlung. The asymptotic analysis is performed in the case of a strong temperature dependence of the thermal conductivity. We finally study the beginning of the expansion phase after stagnation to derive an ignition criterion.

• OSTI ID: 21254545
• Journal Information: Physics of Plasmas, Vol. 15, Issue 10; Other Information: DOI: 10.1063/1.2988333; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALPHA PARTICLES
ASYMPTOTIC SOLUTIONS
BREMSSTRAHLUNG
DIFFERENTIAL EQUATIONS
ELECTRONS
INERTIAL CONFINEMENT
NUCLEAR REACTIONS
PLASMA ACCELERATION
PLASMA WAVES
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY