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The Physics of Inertial FusionBeamPlasma Interaction, Hydrodynamics, Hot Dense Matter$
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Stefano Atzeni and Jürgen Meyer-ter-Vehn

Print publication date: 2004

Print ISBN-13: 9780198562641

Published to Oxford Scholarship Online: January 2008

DOI: 10.1093/acprof:oso/9780198562641.001.0001

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Ignition and burn

Ignition and burn

(p.75) 4 Ignition and burn
The Physics of Inertial Fusion

Stefano Atzeni

JÜrgen Meyer-Ter-Vehn

Oxford University Press

This chapter analyses ignition and thermonuclear burn in some detail. It first considers the simplest case of a preassembled, spherically symmetric configuration with high average density and a central hot spot. Self-heating and ignition conditions are determined, and basic aspects of the physics of thermonuclear burn waves are analysed. Simple analytical treatments are used to provide understanding of results of complex numerical simulations. Next, the dynamics of hot spot formation is addressed. Most of the material in this chapter concerns localized ignition, by a hot spot immersed in a colder fuel, followed by burn propagation. Emphasis is in particular on central ignition of initially isobaric and initially isochoric configurations (isobaric ignition and isochoric ignition, respectively). However, ignition of a uniformly heated fuel, which is referred to as volume ignition, is also studied.

Keywords:   thermonuclear burn waves, central ignition, hot spot, isobaric ignition, isochoric ignition, volume ignition

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