A non-LTE analysis of high energy density Kr plasmas on Z and NIF

Dasgupta, A.; Clark, R. W.; Ouart, N.; Giuliani, J.; Velikovich, A.; Ampleford, D. J.; Hansen, S. B.; Jennings, C.; Harvey-Thompson, A. J.; Jones, B.; Flanagan, T. M.; Bell, K. S.; Apruzese, J. P.; Fournier, K. B.; Scott, H. A.; May, M. J.; Barrios, M. A.; Colvin, J. D.; Kemp, G. E.

doi:10.1063/1.4965243

Title: A non-LTE analysis of high energy density Kr plasmas on Z and NIF

Journal Article · Thu Oct 20 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4965243· OSTI ID:1810679

Dasgupta, A. ^[1]; Clark, R. W. ^[2]; Ouart, N. ^[1];

^[1];

^[3]; Hansen, S. B. ^[3]; Jennings, C. ^[3]; Harvey-Thompson, A. J. ^[3]; Jones, B. ^[3];

^[3]; Bell, K. S. ^[3]; Apruzese, J. P. ^[4];

^[5]; Scott, H. A. ^[5]; May, M. J. ^[5]; Barrios, M. A. ^[5];

^[5]; Kemp, G. E. ^[5]

Naval Research Lab. (NRL), Washington, DC (United States). Plasma Physics Division
Berkeley Research Associates, Beltsville, MD (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Engility Corporation, Chantilly, VA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

We report that multi-keV X-ray radiation sources have a wide range of applications, from biomedical studies and research on thermonuclear fusion to materials science and astrophysics. The refurbished Z pulsed power machine at the Sandia National Laboratories produces intense multi-keV X-rays from argon Z-pinches, but for a krypton Z-pinch, the yield decreases much faster with atomic number Z_A than similar sources on the National Ignition Facility (NIF) laser at the Lawrence Livermore National Laboratory. To investigate whether fundamental energy deposition differences between pulsed power and lasers could account for the yield differences, we consider the Kr plasma on the two machines. The analysis assumes the plasma not in local thermodynamic equilibrium, with a detailed coupling between the hydrodynamics, the radiation field, and the ionization physics. While for the plasma parameters of interest the details of krypton’s M-shell are not crucial, both the L-shell and the K-shell must be modeled in reasonable detail, including the state-specific dielectronic recombination processes that significantly affect Kr’s ionization balance and the resulting X-ray spectrum. We present a detailed description of the atomic model, provide synthetic K- and L-shell spectra, and compare these with the available experimental data from the Z-machine and from NIF to show that the K-shell yield behavior versus Z_A is indeed related to the energy input characteristics. In conclusion, this work aims at understanding the probable causes that might explain the differences in the X-ray conversion efficiencies of several radiation sources on Z and

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

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

Grant/Contract Number:: AC52-07NA27344; AC04-94AL85000; AC04-94AL85000: AC52-07NA27344

OSTI ID:: 1810679

Alternate ID(s):: OSTI ID: 1338408

Report Number(s):: LLNL-JRNL-692187; SAND-2016-12903J; 818889; TRN: US2213075

Journal Information:: Physics of Plasmas, Vol. 23, Issue 10; 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 (37)

Two-dimensional radiation MHD modeling assessment of designs for argon gas puff distributions for future experiments on the refurbished Z machine Thornhill, J. W.; Giuliani, J. L.; Chong, Y. K. High Energy Density Physics, Vol. 8, Issue 3 https://doi.org/10.1016/j.hedp.2012.03.010	journal	September 2012
An analytic Voigt profile escape probability approximation Apruzese, J. P. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 34, Issue 5 https://doi.org/10.1016/0022-4073(85)90018-4	journal	November 1985
Spectroscopic analysis of Cu wire array implosions on the refurbished Z generator Dasgupta, A.; Clark, R. W.; Ouart, N. D. High Energy Density Physics, Vol. 8, Issue 3 https://doi.org/10.1016/j.hedp.2012.03.012	journal	September 2012
X-ray power and yield measurements at the refurbished Z machine Jones, M. C.; Ampleford, D. J.; Cuneo, M. E. Review of Scientific Instruments, Vol. 85, Issue 8 https://doi.org/10.1063/1.4891316	journal	August 2014
Opacity and gradients in aluminum wire array z-pinch implosions on the Z pulsed power facility Ampleford, D. J.; Hansen, S. B.; Jennings, C. A. Physics of Plasmas, Vol. 21, Issue 3 https://doi.org/10.1063/1.4865224	journal	March 2014
K-shell X-ray sources at the Z Accelerator Coverdale, C. A.; Jones, B.; Ampleford, D. J. High Energy Density Physics, Vol. 6, Issue 2 https://doi.org/10.1016/j.hedp.2010.01.006	journal	June 2010
The effect of gradients at stagnation on K-shell x-ray line emission in high-current Ar gas-puff implosions Jones, B.; Apruzese, J. P.; Harvey-Thompson, A. J. Physics of Plasmas, Vol. 22, Issue 2 https://doi.org/10.1063/1.4913350	journal	February 2015
Implosion dynamics and K-shell x-ray generation in large diameter stainless steel wire array Z pinches with various nesting configurations Jones, Brent; Coverdale, Christine A.; Deeney, Christopher Physics of Plasmas, Vol. 15, Issue 12 https://doi.org/10.1063/1.3049909	journal	December 2008
Multi-keV x-ray conversion efficiency in laser-produced plasmas Back, C. A.; Davis, J.; Grun, J. Physics of Plasmas, Vol. 10, Issue 5 https://doi.org/10.1063/1.1566750	journal	May 2003
Multi-keV x-ray source development experiments on the National Ignition Facility Fournier, K. B.; May, M. J.; Colvin, J. D. Physics of Plasmas, Vol. 17, Issue 8 https://doi.org/10.1063/1.3458904	journal	August 2010
Backlighter development at the National Ignition Facility (NIF): Zinc to zirconium Barrios, M. A.; Fournier, K. B.; Regan, S. P. High Energy Density Physics, Vol. 9, Issue 3 https://doi.org/10.1016/j.hedp.2013.05.018	journal	September 2013
Efficient argon K -shell radiation from a Z pinch at currents >15 MA Sze, H.; Coleman, P. L.; Banister, J. Physics of Plasmas, Vol. 8, Issue 7 https://doi.org/10.1063/1.1373418	journal	July 2001
A probabilistic model for continuum transport in dense, optically thick plasmas Clark, R. W.; Davis, J.; Apruzese, J. P. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 53, Issue 3 https://doi.org/10.1016/0022-4073(95)90062-4	journal	March 1995
Bright x-ray stainless steel K-shell source development at the National Ignition Facility May, M. J.; Fournier, K. B.; Colvin, J. D. Physics of Plasmas, Vol. 22, Issue 6 https://doi.org/10.1063/1.4922751	journal	June 2015
The physics of radiation transport in dense plasmas Apruzese, J. P.; Davis, J.; Whitney, K. G. Physics of Plasmas, Vol. 9, Issue 5 https://doi.org/10.1063/1.1446038	journal	May 2002
Fokker-Planck analysis of short-pulse laser heating in the hot-spot-model approximation Pulsifer, P. E.; Whitney, K. G. Physical Review E, Vol. 50, Issue 6 https://doi.org/10.1103/PhysRevE.50.4926	journal	December 1994
Dielectronic Recombination Rate Coefficients for H‐like through Ne‐like Isosequences of Mg, Si, S, Ar, Ca, Fe, and Ni Gu, M. F. The Astrophysical Journal, Vol. 590, Issue 2 https://doi.org/10.1086/375135	journal	June 2003
Demonstration of a 13-keV Kr $K$ -shell x-ray source at the National Ignition Facility Fournier, K. B.; May, M. J.; Colvin, J. D. Physical Review E, Vol. 88, Issue 3 https://doi.org/10.1103/PhysRevE.88.033104	journal	September 2013
K-α emission spectroscopic analysis from a Cu Z-pinch Dasgupta, A.; Clark, R. W.; Giuliani, J. L. High Energy Density Physics, Vol. 9, Issue 2 https://doi.org/10.1016/j.hedp.2013.03.003	journal	June 2013
Influence of L‐shell dynamics on K‐shell yields for imploding krypton Z‐pinch plasmas Davis, J.; Giuliani, J. L.; Mulbrandon, M. Physics of Plasmas, Vol. 2, Issue 5 https://doi.org/10.1063/1.871325	journal	May 1995
Architecture, implementation, and testing of a multiple-shell gas injection system for high current implosions on the Z accelerator Krishnan, Mahadevan; Elliott, Kristi Wilson; Madden, Robert E. Review of Scientific Instruments, Vol. 84, Issue 6 https://doi.org/10.1063/1.4809511	journal	June 2013
Measurement of the $\sim$0.1- to $>$ 10-keV Energy Distribution for an Argon Z -Pinch at the 15-MA Level Coleman, Philip L.; Apruzese, J. P.; Velikovich, Alexander L. IEEE Transactions on Plasma Science, Vol. 35, Issue 1 https://doi.org/10.1109/TPS.2006.889273	journal	February 2007
The physics basis for ignition using indirect-drive targets on the National Ignition Facility Lindl, John D.; Amendt, Peter; Berger, Richard L. Physics of Plasmas, Vol. 11, Issue 2 https://doi.org/10.1063/1.1578638	journal	February 2004
K-shell radiation physics in low- to moderate-atomic-number z-pinch plasmas on the Z accelerator Jones, B.; Deeney, C.; Coverdale, C. A. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 99, Issue 1-3 https://doi.org/10.1016/j.jqsrt.2005.05.027	journal	May 2006
A Renewed Capability for Gas Puff Science on Sandia's Z Machine Jones, Brent; Jennings, Christopher A.; Lamppa, Derek C. IEEE Transactions on Plasma Science, Vol. 42, Issue 5 https://doi.org/10.1109/TPS.2013.2287180	journal	May 2014
Contrasting physics in wire array z pinch sources of 1-20 keV emission on the Z facility Ampleford, D. J.; Jones, B.; Jennings, C. A. Physics of Plasmas, Vol. 21, Issue 5 https://doi.org/10.1063/1.4876621	journal	May 2014
Tungsten wire-array Z-pinch experiments at 200 TW and 2 MJ Spielman, R. B.; Deeney, C.; Chandler, G. A. Physics of Plasmas, Vol. 5, Issue 5 https://doi.org/10.1063/1.872881	journal	May 1998
Time-Integrated Synthetic X-Ray Spectroscopy for Stainless Steel Wire Array $Z$-Pinches Dasgupta, Arati; Giuliani, John L.; Davis, Jack IEEE Transactions on Plasma Science, Vol. 38, Issue 4 https://doi.org/10.1109/TPS.2010.2040841	journal	April 2010
Investigation of K‐shell emission from moderate‐Z, low‐η (‐velocity), Z‐pinch implosions Thornhill, J. W.; Whitney, K. G.; Davis, J. Journal of Applied Physics, Vol. 80, Issue 2 https://doi.org/10.1063/1.362923	journal	July 1996
Large diameter (45–80mm) nested stainless steel wire arrays at the Z accelerator Coverdale, C. A.; Deeney, C.; LePell, P. D. Physics of Plasmas, Vol. 15, Issue 2 https://doi.org/10.1063/1.2840641	journal	February 2008
Simulation study of 3–5 keV x-ray conversion efficiency from Ar K-shell vs. Ag L-shell targets on the National Ignition Facility laser Kemp, G. E.; Colvin, J. D.; Fournier, K. B. Physics of Plasmas, Vol. 22, Issue 5 https://doi.org/10.1063/1.4921250	journal	May 2015
Basic considerations for scaling Z ‐pinch x‐ray emission with atomic number Whitney, K. G.; Thornhill, J. W.; Apruzese, J. P. Journal of Applied Physics, Vol. 67, Issue 4 https://doi.org/10.1063/1.345642	journal	February 1990
Doppler measurement of implosion velocity in fast $Z$ -pinch x-ray sources Jones, B.; Jennings, C. A.; Bailey, J. E. Physical Review E, Vol. 84, Issue 5 https://doi.org/10.1103/PhysRevE.84.056408	journal	November 2011
National Ignition Facility laser performance status Haynam, C. A.; Wegner, P. J.; Auerbach, J. M. Applied Optics, Vol. 46, Issue 16 https://doi.org/10.1364/AO.46.003276	journal	January 2007
Deuterium gas-puff Z-pinch implosions on the Z accelerator Coverdale, C. A.; Deeney, C.; Velikovich, A. L. Physics of Plasmas, Vol. 14, Issue 5 https://doi.org/10.1063/1.2710207	journal	May 2007
A Review of the Gas-Puff <inline-formula> <tex-math notation="LaTeX">$Z$ </tex-math></inline-formula>-Pinch as an X-Ray and Neutron Source Giuliani, J. L.; Commisso, R. J. IEEE Transactions on Plasma Science, Vol. 43, Issue 8 https://doi.org/10.1109/TPS.2015.2451157	journal	August 2015
Computational modeling of Krypton gas puffs with tailored mass density profiles on Za) Jennings, C. A.; Ampleford, D. J.; Lamppa, D. C. Physics of Plasmas, Vol. 22, Issue 5 https://doi.org/10.1063/1.4921154	journal	May 2015

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Title: A non-LTE analysis of high energy density Kr plasmas on Z and NIF

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