Compressing turbulence and sudden viscous dissipation with compression-dependent ionization state

Davidovits, Seth; Fisch, Nathaniel J.

doi:10.1103/PhysRevE.94.053206

Title: Compressing turbulence and sudden viscous dissipation with compression-dependent ionization state

Journal Article · Mon Nov 14 00:00:00 EST 2016 · Physical Review E

DOI:https://doi.org/10.1103/PhysRevE.94.053206· OSTI ID:1336241

Davidovits, Seth ^[1];

^[2]

Princeton Univ., NJ (United States)
Princeton Univ., NJ (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Turbulent plasma flow, amplified by rapid three-dimensional compression, can be suddenly dissipated under continuing compression. Furthermore, this effect relies on the sensitivity of the plasma viscosity to the temperature, μ ~ T ^{5 / 2} . The plasma viscosity is also sensitive to the plasma ionization state. Here, we show that the sudden dissipation phenomenon may be prevented when the plasma ionization state increases during compression, and we demonstrate the regime of net viscosity dependence on compression where sudden dissipation is guaranteed. In addition, it is shown that, compared to cases with no ionization, ionization during compression is associated with larger increases in turbulent energy and can make the difference between growing and decreasing turbulent energy.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-09CH1-1466; NA0001836; NNSA 67350-9960; HDTRA1-11-1-0037; PHY-1506122

OSTI ID:: 1336241

Alternate ID(s):: OSTI ID: 1332027

Journal Information:: Physical Review E, Vol. 94, Issue 5; ISSN 2470-0045

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 15 works

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Cited By (3)

Bulk hydrodynamic stability and turbulent saturation in compressing hot spots Davidovits, Seth; Fisch, Nathaniel J. Physics of Plasmas, Vol. 25, Issue 4 https://doi.org/10.1063/1.5026413	journal	April 2018
Understanding turbulence in compressing plasma as a quasi-EOS Davidovits, Seth; Fisch, Nathaniel J. Physics of Plasmas, Vol. 26, Issue 6 https://doi.org/10.1063/1.5098790	journal	June 2019
Viscous dissipation in two-dimensional compression of turbulence Davidovits, Seth; Fisch, Nathaniel J. Physics of Plasmas, Vol. 26, Issue 8 https://doi.org/10.1063/1.5111961	journal	August 2019

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