Physics – Plasma Physics
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..dppkwo204b&link_type=abstract
American Physical Society, Division of Plasma Physics Meeting, November 17-21, 1997, abstract #kWeaO204.
Physics
Plasma Physics
Scientific paper
Indirectly-driven cylindrical implosions on Nova(W. W. Hsing and N. M. Hoffman, Phys. Rev. Lett. 78), 3876 (1997).^,(W. W. Hsing et al.), Phys. Plasmas 4, 1832 (1997). have resulted in the first direct observation of nonlinear mode coupling between machined ``mass-modulations'' and illumination asymmetries in convergent geometry. Cylinders with C_8H_7Br ablators, CH pushers, and a thin C_8H_6Cl2 marker layer are transversely mounted in a scale-1 Nova hohlraum. The cylinders have sinusoidal perturbations of mode m=10. The hohlraum is driven by eight laser beams creating an initial imprint of a m=4 asymmetry in the x-ray drive. The perturbations grow from acceleration at the ablation surface by the Rayleigh-Taylor instability, and also from Bell-Plesset effects from convergence. Analysis of the feedthrough to the marker layer shows that the distorted images are the result of the fundamental m=10 and 4 modes, and weakly nonlinear coupled m=10-4=6 and 10+4=14 modes. The phase and amplitude of these modes are consistent with theory.(S. W. Haan, Phys. Fluids B 3), 2349 (1991). Work supported by DOE Contract W-7405-ENG-36.
Barnes Cris W.
Beck J. B.
Hoffman Nelson M.
Hsing Warren W.
Richard Denis
No associations
LandOfFree
Nonlinear Mode Coupling in Cylindrical Implosions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nonlinear Mode Coupling in Cylindrical Implosions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear Mode Coupling in Cylindrical Implosions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1686311