Understanding ICF hohlraums using NIF gated laser-entrance-hole images

Chen, Hui; Woods, D. T.; Jones, O. S.; Benedetti, L. R.; Dewald, E. L.; Izumi, N.; MacLaren, S. A.; Meezan, N. B.; Moody, J. D.; Palmer, N. E.; Schneider, M. B.; Vandenboomgaerde, M.

doi:10.1063/1.5128501

Title: Understanding ICF hohlraums using NIF gated laser-entrance-hole images

Journal Article · Thu Feb 06 00:00:00 EST 2020 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5128501· OSTI ID:1632379

^[1];

^[1]; Dewald, E. L. ^[1];

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^[1]; Moody, J. D. ^[1]; Palmer, N. E. ^[1];

^[1]; Vandenboomgaerde, M. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Commissariat a l'Energie Atomique (CEA), Arpajon (France)

The newly available ns-gated laser-entrance-hole (LEH) imager on the National Ignition Facility provides routine, non-perturbative measurements of the x-ray emission from laser-heated plasmas inside the hohlraum as viewed at 19° to the hohlraum axis through one of its LEHs. Multiple images are acquired for a series of times and filter-selected x-ray energy bands within a single shot. The images provide time dependent data on phenomena including the effective radius of the LEH, the length of the gold-plasma “bubble” evolving off the interior wall surface heated by the outer beams, the evolving radius of the x-ray heated hohlraum wall, and the radius of the ablation front of the fusion capsule. Here, these measurements are explained and illustrated with sample data. These techniques are then applied to understand hohlraum behavior as a function of gas fill. For hohlraums with helium gas fill densities of 0.15 to 0.30 mg/cm³, synthetic images computed from simulations agree well with experimental gated LEH images when an inhibited heat transport model [Jones et al., Phys. Plasmas 24, 056312 (2017)] is used. This model can be adjusted to reproduce the expansion rate of the laser-heated plasma bubble in such a way as to improve agreement with the images. At the higher 0.6 mg/cc gas fill, the experimental images show more pronounced 3D features, resulting in slightly less good agreement with the 2D simulations.

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

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

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1632379

Alternate ID(s):: OSTI ID: 1598078

Report Number(s):: LLNL-JRNL-790517; 988625; TRN: US2201114

Journal Information:: Physics of Plasmas, Vol. 27, Issue 2; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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References (32)

Prolate-Spheroid (“Rugby-Shaped”) Hohlraum for Inertial Confinement Fusion Vandenboomgaerde, M.; Bastian, J.; Casner, A. Physical Review Letters, Vol. 99, Issue 6 https://doi.org/10.1103/PhysRevLett.99.065004	journal	August 2007
Exploring the limits of case-to-capsule ratio, pulse length, and picket energy for symmetric hohlraum drive on the National Ignition Facility Laser Callahan, D. A.; Hurricane, O. A.; Ralph, J. E. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5020057	journal	May 2018
Images of the laser entrance hole from the static x-ray imager at NIF Schneider, M. B.; Jones, O. S.; Meezan, N. B. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3491316	journal	October 2010
Electron temperature measurements inside the ablating plasma of gas-filled hohlraums at the National Ignition Facility Barrios, M. A.; Liedahl, D. A.; Schneider, M. B. Physics of Plasmas, Vol. 23, Issue 5 https://doi.org/10.1063/1.4948276	journal	April 2016
Soft x-ray images of the laser entrance hole of ignition hohlraums Schneider, M. B.; Meezan, N. B.; Alvarez, S. S. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4732850	journal	October 2012
Developing an Experimental Basis for Understanding Transport in NIF Hohlraum Plasmas Barrios, M. A.; Moody, J. D.; Suter, L. J. Physical Review Letters, Vol. 121, Issue 9 https://doi.org/10.1103/PhysRevLett.121.095002	journal	August 2018
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
Experimental room temperature hohlraum performance study on the National Ignition Facility Ralph, J. E.; Strozzi, D.; Ma, T. Physics of Plasmas, Vol. 23, Issue 12 https://doi.org/10.1063/1.4972548	journal	December 2016
Description of the NIF Laser Spaeth, M. L.; Manes, K. R.; Kalantar, D. H. Fusion Science and Technology, Vol. 69, Issue 1 https://doi.org/10.13182/FST15-144	journal	February 2016
A simple time-dependent analytic model of the P2 asymmetry in cylindrical hohlraums Landen, O. L.; Amendt, P. A.; Suter, L. J. Physics of Plasmas, Vol. 6, Issue 5 https://doi.org/10.1063/1.873465	journal	May 1999
VISRAD—A 3-D view factor code and design tool for high-energy density physics experiments MacFarlane, J. J. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 81, Issue 1-4 https://doi.org/10.1016/S0022-4073(03)00081-5	journal	September 2003
Laser absorption, power transfer, and radiation symmetry during the first shock of inertial confinement fusion gas-filled hohlraum experiments Pak, A.; Dewald, E. L.; Landen, O. L. Physics of Plasmas, Vol. 22, Issue 12 https://doi.org/10.1063/1.4936803	journal	December 2015
The Physics of Inertial Fusion Atzeni, Stefano; Meyer-ter-Vehn, Jürgen https://doi.org/10.1093/acprof:oso/9780198562641.001.0001	book	January 2004
A high-speed two-frame, 1-2 ns gated X-ray CMOS imager used as a hohlraum diagnostic on the National Ignition Facility (invited) Chen, Hui; Palmer, N.; Dayton, M. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4962252	journal	September 2016
Advances in x-ray framing cameras at the National Ignition Facility to improve quantitative precision in x-ray imaging Benedetti, L. R.; Holder, J. P.; Perkins, M. Review of Scientific Instruments, Vol. 87, Issue 2 https://doi.org/10.1063/1.4941754	journal	February 2016
X-ray streaked refraction enhanced radiography for inferring inflight density gradients in ICF capsule implosions Dewald, E. L.; Landen, O. L.; Masse, L. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039346	journal	October 2018
Advancing the capability of the gated laser-entrance-hole imager on the National Ignition Facility Chen, Hui; Palmer, Nathan; Bell, Perry Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5037103	journal	October 2018
Simultaneous visualization of wall motion, beam propagation, and implosion symmetry on the National Ignition Facility (invited) Izumi, N.; Meezan, N. B.; Johnson, S. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039364	journal	October 2018
Convergent ablator performance measurements Hicks, D. G.; Spears, B. K.; Braun, D. G. Physics of Plasmas, Vol. 17, Issue 10 https://doi.org/10.1063/1.3486536	journal	October 2010
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
Tuning the Implosion Symmetry of ICF Targets via Controlled Crossed-Beam Energy Transfer Michel, P.; Divol, L.; Williams, E. A. Physical Review Letters, Vol. 102, Issue 2 https://doi.org/10.1103/PhysRevLett.102.025004	journal	January 2009
Development of the indirect‐drive approach to inertial confinement fusion and the target physics basis for ignition and gain Lindl, John Physics of Plasmas, Vol. 2, Issue 11 https://doi.org/10.1063/1.871025	journal	November 1995
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
The role of a detailed configuration accounting (DCA) atomic physics package in explaining the energy balance in ignition-scale hohlraums Rosen, M. D.; Scott, H. A.; Hinkel, D. E. High Energy Density Physics, Vol. 7, Issue 3 https://doi.org/10.1016/j.hedp.2011.03.008	journal	September 2011
A characterization technique for nanosecond gated CMOS x-ray cameras Dayton, M.; Carpenter, A.; Chen, H. SPIE Optical Engineering + Applications, SPIE Proceedings https://doi.org/10.1117/12.2237882	conference	September 2016
Progress towards a more predictive model for hohlraum radiation drive and symmetry Jones, O. S.; Suter, L. J.; Scott, H. A. Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4982693	journal	May 2017
Measurement of the Absolute Hohlraum-Wall Albedo under Ignition Foot Drive Conditions Jones, O. S.; Glenzer, S. H.; Suter, L. J. Physical Review Letters, Vol. 93, Issue 6 https://doi.org/10.1103/PhysRevLett.93.065002	journal	August 2004
An overview of the Ultrafast X-ray Imager (UXI) program at Sandia Labs Claus, L.; Fang, L.; Kay, R. SPIE Optical Engineering + Applications https://doi.org/10.1117/12.2188336	conference	August 2015
Design and implementation of a gated-laser entrance hole imaging diagnostic (G-LEH-1) at NIF Palmer, Nathan E.; Chen, Hui; Nelson, Jarom SPIE Optical Engineering + Applications, SPIE Proceedings https://doi.org/10.1117/12.2189124	conference	September 2015
Images of the gold bubble feature in NIF Gas-Filled Ignition Hohlraums Schneider, M. B.; MacLaren, S. A.; Widmann, K. Journal of Physics: Conference Series, Vol. 717 https://doi.org/10.1088/1742-6596/717/1/012049	journal	May 2016
Novel Characterization of Capsule X-Ray Drive at the National Ignition Facility MacLaren, S. A.; Schneider, M. B.; Widmann, K. Physical Review Letters, Vol. 112, Issue 10 https://doi.org/10.1103/PhysRevLett.112.105003	journal	March 2014
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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