Helical instability in MagLIF due to axial flux compression by low-density plasma
Abstract
The MagLIF (Magnetized Liner Inertial Fusion) experiment at Sandia National Labs is one of the three main approaches to inertial confinement fusion. Radiographic measurements of the imploding liner have shown helical structuring that was not included in MagLIF scaling calculations but that could fundamentally change the viability of the approach. We present the first MagLIF linear dynamics simulations, using extended magnetohydrodynamical (XMHD) as well as standard MHD modeling, that reproduce these helical structures, thus enabling a physical understanding of their origin and development. Specifically, it is found that low-density plasma from the simulated power flow surfaces can compress the axial flux in the region surrounding the liner, leading to a strong layer of axial flux on the liner. The strong axial magnetic field on the liner imposes helical magneto- Rayleigh-Taylor perturbations into the imploding liner. A detailed comparison of XMHD and MHD modeling shows that there are defects in the MHD treatment of low-density plasma dynamics that are remedied by inclusion of the Hall term that is included in our XMHD model. In order to obtain fair agreement between XMHD and MHD, great care must be taken in the implementation of the numerics, especially for MHD. Even with a carefulmore »
- Authors:
-
[1];
- Cornell Univ., Ithaca, NY (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Cornell Univ., Ithaca, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1464208
- Alternate Identifier(s):
- OSTI ID: 1456307; OSTI ID: 1499665
- Report Number(s):
- SAND-2018-8579J
Journal ID: ISSN 1070-664X; 666760; TRN: US1902382
- Grant/Contract Number:
- AC04-94AL85000; FOA-0003764; NA0001836; NA0003525; NA0003764
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 6; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; MagLIF; extended-MHD; Hall effect; simulation; discontinuous Galerkin method
Citation Formats
Seyler, C. E., Martin, Matthew R., and Hamlin, N. D. Helical instability in MagLIF due to axial flux compression by low-density plasma. United States: N. p., 2018.
Web. doi:10.1063/1.5028365.
Seyler, C. E., Martin, Matthew R., & Hamlin, N. D. Helical instability in MagLIF due to axial flux compression by low-density plasma. United States. https://doi.org/10.1063/1.5028365
Seyler, C. E., Martin, Matthew R., and Hamlin, N. D. Fri .
"Helical instability in MagLIF due to axial flux compression by low-density plasma". United States. https://doi.org/10.1063/1.5028365. https://www.osti.gov/servlets/purl/1464208.
@article{osti_1464208,
title = {Helical instability in MagLIF due to axial flux compression by low-density plasma},
author = {Seyler, C. E. and Martin, Matthew R. and Hamlin, N. D.},
abstractNote = {The MagLIF (Magnetized Liner Inertial Fusion) experiment at Sandia National Labs is one of the three main approaches to inertial confinement fusion. Radiographic measurements of the imploding liner have shown helical structuring that was not included in MagLIF scaling calculations but that could fundamentally change the viability of the approach. We present the first MagLIF linear dynamics simulations, using extended magnetohydrodynamical (XMHD) as well as standard MHD modeling, that reproduce these helical structures, thus enabling a physical understanding of their origin and development. Specifically, it is found that low-density plasma from the simulated power flow surfaces can compress the axial flux in the region surrounding the liner, leading to a strong layer of axial flux on the liner. The strong axial magnetic field on the liner imposes helical magneto- Rayleigh-Taylor perturbations into the imploding liner. A detailed comparison of XMHD and MHD modeling shows that there are defects in the MHD treatment of low-density plasma dynamics that are remedied by inclusion of the Hall term that is included in our XMHD model. In order to obtain fair agreement between XMHD and MHD, great care must be taken in the implementation of the numerics, especially for MHD. Even with a careful treatment of low-density plasma, MHD exhibits significant shortcomings that emphasize the importance of using XMHD modeling in pulsed-power driven high-energy-density experiments. The present results may explain why past MHD modeling efforts have failed to produce the helical structuring without initially imposing helical perturbations.},
doi = {10.1063/1.5028365},
journal = {Physics of Plasmas},
number = 6,
volume = 25,
place = {United States},
year = {Fri Jun 22 00:00:00 EDT 2018},
month = {Fri Jun 22 00:00:00 EDT 2018}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 29 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Semirelativistic Magnetohydrodynamics and Physics-Based Convergence Acceleration
journal, March 2002
- Gombosi, Tamas I.; Tóth, Gábor; De Zeeuw, Darren L.
- Journal of Computational Physics, Vol. 177, Issue 1
Observations of Modified Three-Dimensional Instability Structure for Imploding -Pinch Liners that are Premagnetized with an Axial Field
journal, December 2013
- Awe, T. J.; McBride, R. D.; Jennings, C. A.
- Physical Review Letters, Vol. 111, Issue 23
Effect of axial magnetic flux compression on the magnetic Rayleigh-Taylor instability (theory)
conference, January 2014
- Ryutov, D. D.; Awe, T. J.; Hansen, S. B.
- 9TH INTERNATIONAL CONFERENCE ON DENSE Z PINCHES, AIP Conference Proceedings
Restoration of the contact surface in the HLL-Riemann solver
journal, July 1994
- Toro, E. F.; Spruce, M.; Speares, W.
- Shock Waves, Vol. 4, Issue 1
Seeded and unseeded helical modes in magnetized, non-imploding cylindrical liner-plasmas
journal, October 2016
- Yager-Elorriaga, D. A.; Zhang, P.; Steiner, A. M.
- Physics of Plasmas, Vol. 23, Issue 10
Understanding Fuel Magnetization and Mix Using Secondary Nuclear Reactions in Magneto-Inertial Fusion
journal, October 2014
- Schmit, P. F.; Knapp, P. F.; Hansen, S. B.
- Physical Review Letters, Vol. 113, Issue 15
A semi-analytic model of magnetized liner inertial fusion
journal, May 2015
- McBride, Ryan D.; Slutz, Stephen A.
- Physics of Plasmas, Vol. 22, Issue 5
Simulations of the implosion and stagnation of compact wire arrays
journal, September 2010
- Jennings, C. A.; Cuneo, M. E.; Waisman, E. M.
- Physics of Plasmas, Vol. 17, Issue 9
Relaxation model for extended magnetohydrodynamics: Comparison to magnetohydrodynamics for dense Z-pinches
journal, January 2011
- Seyler, C. E.; Martin, M. R.
- Physics of Plasmas, Vol. 18, Issue 1
Experimental Demonstration of Fusion-Relevant Conditions in Magnetized Liner Inertial Fusion
journal, October 2014
- Gomez, M. R.; Slutz, S. A.; Sefkow, A. B.
- Physical Review Letters, Vol. 113, Issue 15
On the Choice of Wavespeeds for the HLLC Riemann Solver
journal, November 1997
- Batten, P.; Clarke, N.; Lambert, C.
- SIAM Journal on Scientific Computing, Vol. 18, Issue 6
High-Gain Magnetized Inertial Fusion
journal, January 2012
- Slutz, Stephen A.; Vesey, Roger A.
- Physical Review Letters, Vol. 108, Issue 2
Modified helix-like instability structure on imploding z-pinch liners that are pre-imposed with a uniform axial magnetic field
journal, May 2014
- Awe, T. J.; Jennings, C. A.; McBride, R. D.
- Physics of Plasmas, Vol. 21, Issue 5
Direct measurement of the inertial confinement time in a magnetically driven implosion
journal, April 2017
- Knapp, P. F.; Martin, M. R.; Dolan, D. H.
- Physics of Plasmas, Vol. 24, Issue 4
A positivity-preserving semi-implicit discontinuous Galerkin scheme for solving extended magnetohydrodynamics equations
journal, December 2014
- Zhao, Xuan; Yang, Yang; Seyler, Charles E.
- Journal of Computational Physics, Vol. 278
A semi-analytic model of magnetized liner inertial fusion
text, January 2015
- McBride, Ryan D.; Slutz, Stephen A.
- arXiv
Works referencing / citing this record:
Magneto-Rayleigh–Taylor instability in an elastic finite-width medium overlying an ideal fluid
journal, April 2019
- Piriz, S. A.; Piriz, A. R.; Tahir, N. A.
- Journal of Fluid Mechanics, Vol. 867
The influence of Hall physics on power-flow along a coaxial transmission line
journal, October 2018
- Hamlin, N. D.; Seyler, C. E.
- Physics of Plasmas, Vol. 25, Issue 10
Linear response of a Hall magnetic drift wave for verification of Hall MHD algorithms
journal, July 2019
- Farmer, W. A.; Ellison, C. L.; Hammer, J. H.
- Physics of Plasmas, Vol. 26, Issue 7
Magneto-Rayleigh–Taylor instability in an elastic finite-width medium overlying an ideal fluid
text, January 2019
- Piriz, S. A.; Piriz, A. R.; Tahir, N. A.
- GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt