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Title: Understanding turbulence in compressing plasma as a quasi-EOS

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/1.5098790 · OSTI ID:1527100

Inspired by experimental Z-pinch results, we investigate plasma turbulence undergoing compression. In addition to Z-pinches, plasma turbulence can be compressed in a range of natural and laboratory settings, including inertial fusion experiments and astrophysical molecular clouds. The plasma viscosity, when modeled as described by Braginskii, depends strongly on both temperature and ionization state, giving it the possibility to have a large range of behavior. Here, we highlight the importance of viscous variation in these settings, as well as various insights that can be gained by considering this variation. Included are a “sudden viscous dissipation” effect that leads to a new concept for inertial fusion or X-ray bursts and a bound on turbulent energy behavior under compression. This bound, which was previously applied in inviscid molecular cloud turbulence, is here shown in an application to turbulence that transitions from inviscid to viscous regimes. In conclusion, the task of understanding turbulence under compression can be cast as the process of seeking a “quasi equation of state” for turbulent energy under compression.

Research Organization:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003764; NA0001836; SC0014664
OSTI ID:
1527100
Alternate ID(s):
OSTI ID: 1526788
Journal Information:
Physics of Plasmas, Vol. 26, Issue 6; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Cited By (1)

Viscous dissipation in two-dimensional compression of turbulence journal August 2019

Figures / Tables (1)