Experimental demonstration of the stabilizing effect of dielectric coatings on magnetically accelerated imploding metallic liners
Abstract
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=Rin,0/Rin(z,t)] of 20, which is the highest CR ever directly observed for a strengthless magnetically driven liner. Lastly, the inner-wall radius Rin(z,t) displayed unprecedented uniformity, varying from 95 to 130 μm over the 4.0 mm axial height captured by the radiograph.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- General Atomics, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1241298
- Alternate Identifier(s):
- OSTI ID: 1237789
- Report Number(s):
- SAND-2015-6782J
Journal ID: ISSN 0031-9007; PRLTAO; 598890
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 6; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
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., and Tomlinson, Kurt. Experimental demonstration of the stabilizing effect of dielectric coatings on magnetically accelerated imploding metallic liners. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.116.065001.
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. Experimental demonstration of the stabilizing effect of dielectric coatings on magnetically accelerated imploding metallic liners. United States. https://doi.org/10.1103/PhysRevLett.116.065001
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., and Tomlinson, Kurt. Wed .
"Experimental demonstration of the stabilizing effect of dielectric coatings on magnetically accelerated imploding metallic liners". United States. https://doi.org/10.1103/PhysRevLett.116.065001. https://www.osti.gov/servlets/purl/1241298.
@article{osti_1241298,
title = {Experimental demonstration of the stabilizing effect of dielectric coatings on magnetically accelerated imploding metallic liners},
author = {Awe, Thomas James and Peterson, Kyle J. and Yu, Edmund P. and McBride, Ryan D. and Sinars, Daniel B. and Gomez, Matthew R. and Jennings, Christopher Ashley and Martin, Matthew R. and Rosenthal, Stephen E. and Sefkow, Adam B. and Slutz, Stephen A. and Vesey, Roger A. and Schroen, D. G. and Tomlinson, Kurt},
abstractNote = {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=Rin,0/Rin(z,t)] of 20, which is the highest CR ever directly observed for a strengthless magnetically driven liner. Lastly, the inner-wall radius Rin(z,t) displayed unprecedented uniformity, varying from 95 to 130 μm over the 4.0 mm axial height captured by the radiograph.},
doi = {10.1103/PhysRevLett.116.065001},
journal = {Physical Review Letters},
number = 6,
volume = 116,
place = {United States},
year = {Wed Feb 10 00:00:00 EST 2016},
month = {Wed Feb 10 00:00:00 EST 2016}
}
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