Pushered single shell implosions for mix and radiation trapping studies using high-Z layers on National Ignition Facility

Dewald, E. L.; Pino, J. E.; Tipton, R. E.; Salmonson, J. D.; Ralph, J.; Hartouni, E.; Khan, S. F.; Hatarik, R.; Young, C. V.; Thorn, D.; Smalyuk, V. A.; Sacks, R.; Nikroo, A.; Rice, N.; MacLaren, S. A.; Prisbrey, S.; Remington, B. A.; Graziani, F.

doi:10.1063/1.5109426

Title: Pushered single shell implosions for mix and radiation trapping studies using high-Z layers on National Ignition Facility

Journal Article · Mon Jul 01 00:00:00 EDT 2019 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5109426· OSTI ID:1759974

Dewald, E. L. ^[1]; Pino, J. E. ^[1]; Tipton, R. E. ^[1]; Salmonson, J. D. ^[1]; Ralph, J. ^[1];

^[1]; Khan, S. F. ^[1]; Hatarik, R. ^[1];

^[1]; Thorn, D. ^[1]; Smalyuk, V. A. ^[1]; Sacks, R. ^[2];

^[1]; Rice, N. ^[3];

^[1]; Prisbrey, S. ^[1];

^[1];

^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
General Atomics, San Diego, CA (United States)

Pushered Single Shells (PSSs) are another approach to Inertial Confinement Fusion implosions that employ high-Z materials in the innermost capsule layer (pusher) as a means to enhance radiation trapping and lower core ignition requirements. However, adding high-Z materials can also increase losses due to mix, provide extra tamping, and make the capsule emission opaque to x-ray diagnostics. The first PSS implosions performed on the National Ignition Facility use plastic ablators with a germanium (Ge) dopant as a high-Z surrogate in the pusher to isolate the effects of high-Z mix and radiation trapping without changing tamping. Using a 2-shock laser pulse, the PSS implosions are designed and symmetrized to reach 3.7 keV core temperatures. A low concentration (2.8%) Ge dopant is added to the innermost layer, and the resulting effects on mix and x-ray opacity are observed. The method of separated reactants is used to infer information about mixing between the deuterated plastic pusher and the capsule fill gas (25% tritium) from the resulting nuclear DT reactions. Radiation transport is studied via capsule emission x-ray spectroscopy and imaging. Both nuclear and x-ray data corroborate the hypothesis that the addition of Ge strongly affects the mix region through radiation losses but has a minimal effect on the core and the warm, unmixed regions. Simulations using diffusive and turbulent mix models agree qualitatively with data, but quantitative agreement may require hybrid mix models that can model the transitional regime between turbulence and diffusion. Simulations matching the observables show increased core radiation trapping when Ge is added.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1759974

Report Number(s):: LLNL-JRNL-773415; 965674; TRN: US2205700

Journal Information:: Physics of Plasmas, Vol. 26, Issue 7; Conference: 60.Annual Meeting of the APS Division of Plasma Physics, Portland, OR (United States), 5-9 Nov 2018; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

References (32)

High‐speed gated x‐ray imaging for ICF target experiments (invited) Bradley, D. K.; Bell, P. M.; Kilkenny, J. D. Review of Scientific Instruments, Vol. 63, Issue 10 https://doi.org/10.1063/1.1143571	journal	October 1992
Symmetry tuning of a near one-dimensional 2-shock platform for code validation at the National Ignition Facility Khan, S. F.; MacLaren, S. A.; Salmonson, J. D. Physics of Plasmas, Vol. 23, Issue 4 https://doi.org/10.1063/1.4947223	journal	April 2016
Fuel gain exceeding unity in an inertially confined fusion implosion Hurricane, O. A.; Callahan, D. A.; Casey, D. T. Nature, Vol. 506, Issue 7488 https://doi.org/10.1038/nature13008	journal	February 2014
Development of nuclear diagnostics for the National Ignition Facility (invited) Glebov, V. Yu.; Meyerhofer, D. D.; Sangster, T. C. Review of Scientific Instruments, Vol. 77, Issue 10 https://doi.org/10.1063/1.2236281	journal	October 2006
The NIF x-ray spectrometer calibration campaign at Omega Pérez, F.; Kemp, G. E.; Regan, S. P. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4891054	journal	November 2014
Experimental Demonstration of X-Ray Drive Enhancement with Rugby-Shaped Hohlraums Philippe, F.; Casner, A.; Caillaud, T. Physical Review Letters, Vol. 104, Issue 3 https://doi.org/10.1103/PhysRevLett.104.035004	journal	January 2010
Spark and volume ignition of DT and D ₂ microspheres Basko, M. M. Nuclear Fusion, Vol. 30, Issue 12 https://doi.org/10.1088/0029-5515/30/12/001	journal	December 1990
Analytic models of high-temperature hohlraums Stygar, W. A.; Olson, R. E.; Spielman, R. B. Physical Review E, Vol. 64, Issue 2 https://doi.org/10.1103/PhysRevE.64.026410	journal	July 2001
High performance imaging streak camera for the National Ignition Facility Opachich, Y. P.; Kalantar, D. H.; MacPhee, A. G. Review of Scientific Instruments, Vol. 83, Issue 12 https://doi.org/10.1063/1.4769753	journal	December 2012
A study of ALE simulations of Rayleigh–Taylor instability Darlington, Rebecca M.; McAbee, Thomas L.; Rodrigue, Garry Computer Physics Communications, Vol. 135, Issue 1 https://doi.org/10.1016/S0010-4655(00)00216-2	journal	March 2001
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
The National Ignition Facility modular Kirkpatrick-Baez microscope Pickworth, L. A.; Ayers, J.; Bell, P. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4960417	journal	August 2016
The Physics of Inertial Fusion Atzeni, Stefano; Meyer-ter-Vehn, Jürgen https://doi.org/10.1093/acprof:oso/9780198562641.001.0001	book	January 2004
Multimode short-wavelength perturbation growth studies for the National Ignition Facility double-shell ignition target designs Milovich, J. L.; Amendt, P.; Marinak, M. Physics of Plasmas, Vol. 11, Issue 4 https://doi.org/10.1063/1.1646161	journal	April 2004
Using a 2-shock 1D platform at NIF to measure the effect of convergence on mix and symmetry Kyrala, G. A.; Pino, J. E.; Khan, S. F. Physics of Plasmas, Vol. 25, Issue 10 https://doi.org/10.1063/1.5038570	journal	October 2018
First demonstration of improved capsule implosions by reducing radiation preheat in uranium vs gold hohlraums Dewald, E. L.; Tommasini, R.; Meezan, N. B. Physics of Plasmas, Vol. 25, Issue 9 https://doi.org/10.1063/1.5039385	journal	September 2018
Radiation confinement in x-ray-heated cavities Tsakiris, G. D.; Massen, J.; Sigel, R. Physical Review A, Vol. 42, Issue 10 https://doi.org/10.1103/PhysRevA.42.6188	journal	November 1990
Dante soft x-ray power diagnostic for National Ignition Facility Dewald, E. L.; Campbell, K. M.; Turner, R. E. Review of Scientific Instruments, Vol. 75, Issue 10 https://doi.org/10.1063/1.1788872	journal	October 2004
2D X-Ray Radiography of Imploding Capsules at the National Ignition Facility Rygg, J. R.; Jones, O. S.; Field, J. E. Physical Review Letters, Vol. 112, Issue 19 https://doi.org/10.1103/PhysRevLett.112.195001	journal	May 2014
Development of the CD Symcap platform to study gas-shell mix in implosions at the National Ignition Facility Casey, D. T.; Smalyuk, V. A.; Tipton, R. E. Physics of Plasmas, Vol. 21, Issue 9 https://doi.org/10.1063/1.4894215	journal	September 2014
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
Capsule performance optimization in the National Ignition Campaign Landen, O. L.; Boehly, T. R.; Bradley, D. K. Physics of Plasmas, Vol. 17, Issue 5 https://doi.org/10.1063/1.3298882	journal	May 2010
Scaling of x-ray K-shell sources from laser-solid interactions Workman, Jonathan; Kyrala, George A. International Symposium on Optical Science and Technology, SPIE Proceedings https://doi.org/10.1117/12.448463	conference	November 2001
Cretin—a radiative transfer capability for laboratory plasmas Scott, Howard A. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 71, Issue 2-6 https://doi.org/10.1016/S0022-4073(01)00109-1	journal	October 2001
Capsule Ablator Inflight Performance Measurements Via Streaked Radiography Of ICF Implosions On The NIF* Dewald, E. L.; Tommasini, R.; Mackinnon, A. Journal of Physics: Conference Series, Vol. 688 https://doi.org/10.1088/1742-6596/688/1/012014	journal	March 2016
Implosion dynamics measurements at the National Ignition Facility Hicks, D. G.; Meezan, N. B.; Dewald, E. L. Physics of Plasmas, Vol. 19, Issue 12 https://doi.org/10.1063/1.4769268	journal	December 2012
K-L turbulence model for the self-similar growth of the Rayleigh-Taylor and Richtmyer-Meshkov instabilities Dimonte, Guy; Tipton, Robert Physics of Fluids, Vol. 18, Issue 8 https://doi.org/10.1063/1.2219768	journal	August 2006
Measuring x-ray burn history with the Streaked Polar Instrumentation for Diagnosing Energetic Radiation (SPIDER) at the National Ignition Facility (NIF) Khan, S. F.; Bell, P. M.; Bradley, D. K. SPIE Optical Engineering + Applications, SPIE Proceedings https://doi.org/10.1117/12.930032	conference	October 2012
Large eddy simulation requirements for the Richtmyer-Meshkov instability Olson, Britton J.; Greenough, Jeff Physics of Fluids, Vol. 26, Issue 4 https://doi.org/10.1063/1.4871396	journal	April 2014
Energy dependent sensitivity of microchannel plate detectors Rochau, G. A.; Bailey, J. E.; Chandler, G. A. Review of Scientific Instruments, Vol. 77, Issue 10 https://doi.org/10.1063/1.2336461	journal	October 2006
Assessing the prospects for achieving double-shell ignition on the National Ignition Facility using vacuum hohlraums Amendt, Peter; Cerjan, C.; Hamza, A. Physics of Plasmas, Vol. 14, Issue 5 https://doi.org/10.1063/1.2716406	journal	May 2007
Three-dimensional HYDRA simulations of National Ignition Facility targets Marinak, M. M.; Kerbel, G. D.; Gentile, N. A. Physics of Plasmas, Vol. 8, Issue 5 https://doi.org/10.1063/1.1356740	journal	May 2001

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