Detection of an anomalous pressure on a magneto-inertial-fusion load current diagnostic

Hess, M. H.; Hutsel, B. T.; Jennings, C. A.; VanDevender, J. P.; Sefkow, A. B.; Gomez, M. R.; Knapp, P. F.; Laity, G. R.; Dolan, D. H.; Lamppa, D. C.; Peterson, K. J.; Stygar, W. A.; Sinars, D. B.

doi:10.1063/1.4975021

Title: Detection of an anomalous pressure on a magneto-inertial-fusion load current diagnostic

Journal Article · Mon Jan 30 00:00:00 EST 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4975021· OSTI ID:1399886

Hess, M. H. ^[1];

^[1]; Jennings, C. A. ^[1]; VanDevender, J. P. ^[1]; Sefkow, A. B. ^[2]; Gomez, M. R. ^[1];

^[1]; Laity, G. R. ^[1]; Dolan, D. H. ^[1]; Lamppa, D. C. ^[1]; Peterson, K. J. ^[1]; Stygar, W. A. ^[1]; Sinars, D. B. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Recent Magnetized Liner Inertial Fusion experiments at the Sandia National Laboratories Z pulsed power facility have featured a PDV (Photonic Doppler Velocimetry) diagnostic in the final power feed section for measuring load current. In this paper, we report on an anomalous pressure that is detected on this PDV diagnostic very early in time during the current ramp. Early time load currents that are greater than both B-dot upstream current measurements and existing Z machine circuit models by at least 1 MA would be necessary to describe the measured early time velocity of the PDV flyer. This leads us to infer that the pressure producing the early time PDV flyer motion cannot be attributed to the magnetic pressure of the load current but rather to an anomalous pressure. Using the MHD code ALEGRA, we are able to compute a time-dependent anomalous pressure function, which when added to the magnetic pressure of the load current, yields simulated flyer velocities that are in excellent agreement with the PDV measurement. As a result, we also provide plausible explanations for what could be the origin of the anomalous pressure.

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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:: 1399886

Alternate ID(s):: OSTI ID: 1343627

Report Number(s):: SAND2016-11409J; SAND-2017-1201J; PHPAEN; 649042; TRN: US1703091

Journal Information:: Physics of Plasmas, Vol. 24, Issue 1; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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References (20)

Pulsed-power-driven cylindrical liner implosions of laser preheated fuel magnetized with an axial field Slutz, S. A.; Herrmann, M. C.; Vesey, R. A. Physics of Plasmas, Vol. 17, Issue 5 https://doi.org/10.1063/1.3333505	journal	May 2010
A constitutive model for metals applicable at high‐strain rate Steinberg, D. J.; Cochran, S. G.; Guinan, M. W. Journal of Applied Physics, Vol. 51, Issue 3 https://doi.org/10.1063/1.327799	journal	March 1980
Small Gap Experiments in Magnetically Insulated Transmission Lines Stinnett, R. W.; Palmer, M. A.; Spielman, R. B. IEEE Transactions on Plasma Science, Vol. 11, Issue 3 https://doi.org/10.1109/TPS.1983.4316253	journal	January 1983
Zur Theorie des Durchgangs schneller Korpuskularstrahlen durch Materie Bethe, H. Annalen der Physik, Vol. 397, Issue 3 https://doi.org/10.1002/andp.19303970303	journal	January 1930
Practical Improvements to the Lee-More Conductivity Near the Metal-Insulator Transition Desjarlais, M. P. Contributions to Plasma Physics, Vol. 41, Issue 2-3 https://doi.org/10.1002/1521-3986(200103)41:2/3<267::AID-CTPP267>3.0.CO;2-P	journal	March 2001
Experimental Demonstration of Fusion-Relevant Conditions in Magnetized Liner Inertial Fusion Gomez, M. R.; Slutz, S. A.; Sefkow, A. B. Physical Review Letters, Vol. 113, Issue 15 https://doi.org/10.1103/PhysRevLett.113.155003	journal	October 2014
Accuracy and precision in photonic Doppler velocimetry Dolan, D. H. Review of Scientific Instruments, Vol. 81, Issue 5 https://doi.org/10.1063/1.3429257	journal	May 2010
Laser interferometer for measuring high velocities of any reflecting surface Barker, L. M.; Hollenbach, R. E. Journal of Applied Physics, Vol. 43, Issue 11 https://doi.org/10.1063/1.1660986	journal	November 1972
Compact system for high-speed velocimetry using heterodyne techniques Strand, O. T.; Goosman, D. R.; Martinez, C. Review of Scientific Instruments, Vol. 77, Issue 8 https://doi.org/10.1063/1.2336749	journal	August 2006
Negative ion losses in magnetically insulated vacuum gaps VanDevender, J. P.; Stinnett, R. W.; Anderson, R. J. Applied Physics Letters, Vol. 38, Issue 4 https://doi.org/10.1063/1.92325	journal	February 1981
Solid liner implosions on Z for producing multi-megabar, shockless compressions Martin, M. R.; Lemke, R. W.; McBride, R. D. Physics of Plasmas, Vol. 19, Issue 5 https://doi.org/10.1063/1.3694519	journal	May 2012
Particle-in-cell simulations of electron flow in the post-hole convolute of the Z accelerator Pointon, T. D.; Stygar, W. A.; Spielman, R. B. Physics of Plasmas, Vol. 8, Issue 10 https://doi.org/10.1063/1.1401118	journal	October 2001
Magnetically driven hyper-velocity launch capability at the Sandia Z accelerator Lemke, R. W.; Knudson, M. D.; Davis, J. -P. International Journal of Impact Engineering, Vol. 38, Issue 6 https://doi.org/10.1016/j.ijimpeng.2010.10.019	journal	June 2011
An efficient method for unfolding kinetic pressure driven VISAR data Hess, M.; Peterson, K.; Harvey-Thompson, A. High Power Laser Science and Engineering, Vol. 3 https://doi.org/10.1017/hpl.2015.23	journal	January 2015
A constitutive model for strain rates from 10 ⁻ ⁴ to 10 ⁶ s ⁻ ¹ Steinberg, D. J.; Lund, C. M. Journal of Applied Physics, Vol. 65, Issue 4 https://doi.org/10.1063/1.342968	journal	February 1989
Magnetically insulated ion flow theory Ottinger, P. F.; Schumer, J. W. Physics of Plasmas, Vol. 13, Issue 6 https://doi.org/10.1063/1.2207122	journal	June 2006
Pulsed-power-driven high energy density physics and inertial confinement fusion research Matzen, M. Keith; Sweeney, M. A.; Adams, R. G. Physics of Plasmas, Vol. 12, Issue 5 https://doi.org/10.1063/1.1891746	journal	May 2005
Results of vacuum cleaning techniques on the performance of LiF field-threshold ion sources on extraction applied-B ion diodes at 1-10 TW Cuneo, M. E.; Menge, P. R.; Hanson, D. L. IEEE Transactions on Plasma Science, Vol. 25, Issue 2 https://doi.org/10.1109/27.602495	journal	April 1997
$10^{7}$ -A load-current $B$ -dot monitor: Simulations, design, and performance Rose, D. V.; Welch, D. R.; Miller, C. L. Physical Review Special Topics - Accelerators and Beams, Vol. 13, Issue 4 https://doi.org/10.1103/PhysRevSTAB.13.040401	journal	April 2010
Shock-wave compression of brittle solids Grady, D. E. Mechanics of Materials, Vol. 29, Issue 3-4 https://doi.org/10.1016/S0167-6636(98)00015-5	journal	August 1998

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