The evolution of instabilities during magnetically driven liner implosions.

Conference · Mon Nov 01 04:00:00 EDT 2010

OSTI ID:1038234

Jennings, Christopher A; Slutz, Stephen A; Cuneo, Michael Edward; McBride, Ryan D; Herrmann, Mark C; Sinars, Daniel Brian

Numerical simulations [S.A. Slutz et al Phys. Plasmas 17, 056303 (2010)] indicate that fuel magnetization and preheat could enable cylindrical liner implosions to become an efficient means to generate fusion conditions. A series of simulations has been performed to study the stability of magnetically driven liner implosions. These simulations exhibit the initial growth and saturation of an electro-thermal instability. The Rayleigh-Taylor instability further amplifies the resultant density perturbations developing a spectrum of modes initially peaked at short wavelengths. With time the spectrum of modes evolves towards longer wavelengths developing an inverse cascade. The effects of mode coupling, the radial dependence of the magnetic pressure, and the initial surface roughness will be discussed.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1038234
• Report Number(s): SAND2010-8696C
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
IMPLOSIONS
INSTABILITY
LINERS
MAGNETIZATION
RAYLEIGH-TAYLOR INSTABILITY
ROUGHNESS
SATURATION
STABILITY
WAVELENGTHS