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Three-dimensional single-mode nonlinear ablative Rayleigh-Taylor instability

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4940917· OSTI ID:1239798
 [1];  [2];  [3];  [2];  [2];  [2]
  1. Univ. of Rochester, Rochester, NY (United States); Laboratory for Laser Energetics, University of Rochester, Rochester, NY
  2. Univ. of Rochester, Rochester, NY (United States)
  3. Univ. Politecnica de Madrid, Madrid (Spain)
The nonlinear evolution of the single-mode ablative Rayleigh-Taylor instability is studied in three dimensions. As the mode wavelength approaches the cutoff of the linear spectrum (short-wavelength modes), it is found that the three-dimensional (3D) terminal bubble velocity greatly exceeds both the two-dimensional (2D) value and the classical 3D bubble velocity. Unlike in 2D, the 3D short-wavelength bubble velocity does not saturate. The growing 3D bubble acceleration is driven by the unbounded accumulation of vorticity inside the bubble. As a result, the vorticity is transferred by mass ablation from the Rayleigh-Taylor spikes to the ablated plasma filling the bubble volume.
Research Organization:
Univ. of Rochester, Rochester, NY (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Grant/Contract Number:
NA0001944; SC0014318
OSTI ID:
1239798
Alternate ID(s):
OSTI ID: 1236654
OSTI ID: 22493885
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 23; ISSN 1070-664X; ISSN PHPAEN
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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