Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects

Adams, Colin S.; Moser, Auna L.; Hsu, Scott C.

doi:10.1103/PhysRevE.92.051101

Title: Observation of Rayleigh-Taylor-instability evolution in a plasma with magnetic and viscous effects

Journal Article · Fri Nov 06 00:00:00 EST 2015 · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

DOI:https://doi.org/10.1103/PhysRevE.92.051101· OSTI ID:1234926

Adams, Colin S. ^[1]; Moser, Auna L. ^[2]; Hsu, Scott C. ^[2]

Los Alamos National Lab., Los Alamos, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
Los Alamos National Lab., Los Alamos, NM (United States)

We present time-resolved observations of Rayleigh-Taylor-instability (RTI) evolution at the interface between an unmagnetized plasma jet colliding with a stagnated, magnetized plasma. The observed instability growth time (~10μs) is consistent with the estimated linear RTI growth rate calculated using experimentally inferred values of density (~10¹⁴cm–3) and deceleration (~10⁹ m/s²). The observed mode wavelength (≳1 cm) nearly doubles within a linear growth time. Furthermore, theoretical estimates of magnetic and viscous stabilization and idealized magnetohydrodynamic simulations including a physical viscosity model both suggest that the observed instability evolution is subject to magnetic and/or viscous effects.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1234926

Alternate ID(s):: OSTI ID: 1225390

Report Number(s):: LA-UR-14-29580; PLEEE8

Journal Information:: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Vol. 92, Issue 5; ISSN 1539-3755

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 11 works

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A survey of fluid and kinetic instabilities relevant to space and laboratory plasmas Srinivasan, Bhuvana; Cagas, Petr; Masti, Robert Radiation Effects and Defects in Solids, Vol. 174, Issue 1-2 https://doi.org/10.1080/10420150.2019.1577853	journal	February 2019
Experimental study of ion heating in obliquely merging hypersonic plasma jets Langendorf, Samuel J.; Yates, Kevin C.; Hsu, Scott C. Physics of Plasmas, Vol. 26, Issue 8 https://doi.org/10.1063/1.5108727	journal	August 2019
Experimental Study of Ion Heating in Obliquely Merging Hypersonic Plasma Jets Langendorf, Samuel J.; Yates, Kevin C.; Hsu, Scott C. arXiv https://doi.org/10.48550/arxiv.1905.02276	text	January 2019

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