Abstract Submitted for the DPP07 Meeting of The American Physical Society Sensitivity of Double-Shell Ignition Capsules to Asymmetric Drive1

Submitted for the DPP07 Meeting of The American Physical Society Sensitivity of Double-Shell Ignition Capsules to Asymmetric Drive1 I.L. TREGILLIS, G.R. MAGELSSEN, N.D. DELAMATER, M.A. GUNDERSON, N.M. HOFFMAN, Los Alamos National Laboratory — Double-shell (DS) targets [1] present an alternative approach to ignition via the cryogenic single-shell point design [2]. Although these targets present unique fabrication challenges, they embody many attractive features, including non-cryogenic fielding and low threshold temperatures (∼4 keV) for volume ignition [3-4]. We have used 2D radiationhydrodynamic modeling to survey the behavior of DS targets under asymmetric temperature drive in rugby vacuum hohlraums. The yield is robust against deviations from symmetric illumination, varying smoothly as a function of the imposed P2 and P4 amplitudes. Ignition occurs even when 10% or more of the drive is contained in Legendre P2 or P4 components, with yield reductions on the order of 50% for the most extreme cases investigated here. [1] P. Amendt et al., Phys. of Plasmas 9, 2221 (2002) [2] D. A. Callahan et al., Phys. of Plasmas 13, 56307 (2005) [3] P. Amendt et al., Phys. Rev. Lett. 94, 65004 (2005) [4] W. S. Varnum et al., Phys. Rev. Lett. 84, 5153 (2000) 1Work supported by US DOE/NNSA, performed at LANL, operated by LANS LLC under Contract DE-AC52-06NA25396. I. L. Tregillis Los Alamos National Laboratory Date submitted: 13 Jul 2007 Electronic form version 1.4