Jump to ContentJump to Main Navigation
The Physics of Inertial FusionBeamPlasma Interaction, Hydrodynamics, Hot Dense Matter$
Users without a subscription are not able to see the full content.

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

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2018. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a monograph in OSO for personal use (for details see www.oxfordscholarship.com/page/privacy-policy).date: 17 December 2018

Hydrodynamic stability

Hydrodynamic stability

(p.237) 8 Hydrodynamic stability
The Physics of Inertial Fusion

Stefano Atzeni

JÜrgen Meyer-Ter-Vehn

Oxford University Press

This chapter is devoted to hydrodynamic instabilities. Internal confinement fusion (ICF) capsule implosions are inherently unstable. In particular, the Rayleigh-Taylor instability (RTI) developing at the beam accelerated capsule outer surface tends to destroy the imploding shell, while the deceleration-phase RTI occurring at the inner surface of the stagnating capsule hinders the formation of a central hot spot. Control of this instability is a major challenge facing ICF. Richtmyer-Meshkov (RMI) and Kelvin-Helmholtz (KHI) instabilities also occur in ICF. Starting from basic theory, the instability linear theory is developed in much detail, including the stabilizing effect of ablation on RTI (ablative stabilization). The resulting dispersion relation is then applied to actual ICF implosions, deriving the admissible levels of non-uniformity in capsule make and implosion drive. The nonlinear growth of bubbles and spikes, including turbulent mixing are also described.

Keywords:   internal confinement fusion, Rayleigh-Taylor instability, Richtmyer-Meshkov instability, Kelvin-Helmholtz instability, instability linear theory, instability dispersion relation, deceleration-phase RTI, ablative stabilization, bubbles and spikes, turbulent mixing

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .