Experimental demonstration of the stabilizing effect of dielectric coatings on magnetically accelerated imploding metallic liners

Awe, Thomas James; Peterson, Kyle J.; Yu, Edmund P.; McBride, Ryan D.; Sinars, Daniel B.; Gomez, Matthew R.; Jennings, Christopher Ashley; Martin, Matthew R.; Rosenthal, Stephen E.; Sefkow, Adam B.; Slutz, Stephen A.; Vesey, Roger A.; Schroen, D. G.; Tomlinson, Kurt

doi:10.1103/PhysRevLett.116.065001

Title: Experimental demonstration of the stabilizing effect of dielectric coatings on magnetically accelerated imploding metallic liners

Journal Article · Wed Feb 10 00:00:00 EST 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.116.065001· OSTI ID:1241298

Awe, Thomas James ^[1]; Peterson, Kyle J. ^[1]; Yu, Edmund P. ^[1]; McBride, Ryan D. ^[1]; Sinars, Daniel B. ^[1]; Gomez, Matthew R. ^[1]; Jennings, Christopher Ashley ^[1]; Martin, Matthew R. ^[1]; Rosenthal, Stephen E. ^[1]; Sefkow, Adam B. ^[1]; Slutz, Stephen A. ^[1]; Vesey, Roger A. ^[1]; Schroen, D. G. ^[2]; Tomlinson, Kurt ^[2]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
General Atomics, San Diego, CA (United States)

Enhanced implosion stability has been experimentally demonstrated for magnetically accelerated liners that are coated with 70 μm of dielectric. The dielectric tamps liner-mass redistribution from electrothermal instabilities and also buffers coupling of the drive magnetic field to the magneto-Rayleigh-Taylor instability. A dielectric-coated and axially premagnetized beryllium liner was radiographed at a convergence ratio [CR=R_in,0/R_in(z,t)] of 20, which is the highest CR ever directly observed for a strengthless magnetically driven liner. Lastly, the inner-wall radius R_in(z,t) displayed unprecedented uniformity, varying from 95 to 130 μm over the 4.0 mm axial height captured by the radiograph.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

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

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1241298

Alternate ID(s):: OSTI ID: 1237789

Report Number(s):: SAND-2015-6782J; PRLTAO; 598890

Journal Information:: Physical Review Letters, Vol. 116, Issue 6; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 65 works

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Technique for insulated and non-insulated metal liner X-pinch radiography on a 1 MA pulsed power machine Atoyan, L.; Shelkovenko, T. A.; Pikuz, S. A. Review of Scientific Instruments, Vol. 88, Issue 11 https://doi.org/10.1063/1.4989985	journal	November 2017
The electro-thermal stability of tantalum relative to aluminum and titanium in cylindrical liner ablation experiments at 550 kA Steiner, Adam M.; Campbell, Paul C.; Yager-Elorriaga, David A. Physics of Plasmas, Vol. 25, Issue 3 https://doi.org/10.1063/1.5012891	journal	March 2018
Fluorescence and absorption spectroscopy for warm dense matter studies and ICF plasma diagnostics Hansen, S. B.; Harding, E. C.; Knapp, P. F. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5018580	journal	May 2018
Enhancing performance of magnetized liner inertial fusion at the Z facility Slutz, S. A.; Gomez, M. R.; Hansen, S. B. Physics of Plasmas, Vol. 25, Issue 11 https://doi.org/10.1063/1.5054317	journal	November 2018
Reduction of ablated surface expansion in pulsed-power-driven experiments using an aerosol dielectric coating Evans, M.; Adams, M. B.; Campbell, P. C. Physics of Plasmas, Vol. 26, Issue 7 https://doi.org/10.1063/1.5066231	journal	July 2019
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The effect of the metal phase state on the growth of thermal instabilities in an electrically exploding conductor Oreshkin, V. I.; Khishenko, K. V.; Oreshkin, E. V. Plasma Research Express, Vol. 1, Issue 3 https://doi.org/10.1088/2516-1067/ab35ab	journal	August 2019

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