Using time-resolved penumbral imaging to measure low hot spot x-ray emission signals from capsule implosions at the National Ignition Facility

Glenzer, Siegfried H.; Bishel, D. T.; Bachmann, B.; Yi, A.; Kraus, D.; Divol, L.; Bethkenhagen, M.; Falcone, R. W.; Fletcher, L. B.; Landen, O. L.; MacDonald, M. J.; Masters, N.; Neumayer, P.; Remer, R.; Saunders, A. M.; Witte, B.; Doppner, T.

doi:10.1063/1.5037073

Title: Using time-resolved penumbral imaging to measure low hot spot x-ray emission signals from capsule implosions at the National Ignition Facility

Journal Article · Thu Sep 27 00:00:00 EDT 2018 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5037073· OSTI ID:1464605

Glenzer, Siegfried H. ^[1]; Bishel, D. T. ^[2]; Bachmann, B. ^[2]; Yi, A. ^[3]; Kraus, D. ^[4]; Divol, L. ^[2]; Bethkenhagen, M. ^[5]; Falcone, R. W. ^[6]; Fletcher, L. B. ^[1]; Landen, O. L. ^[2]; MacDonald, M. J. ^[6]; Masters, N. ^[2]; Neumayer, P. ^[7]; Remer, R. ^[8]; Saunders, A. M. ^[6]; Witte, B. ^[9]; Doppner, T. ^[2]

SLAC National Accelerator Lab., Menlo Park, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. Rostock, Rostock (Germany)
Univ. of California, Berkeley, CA (United States)
GSI Helmholtzzentrum f ur Schwerionenforschung, Darmstadt (Germany)
Univ. Rostock, Rostock (Germany)
Univ. Rostock, Rostock (Germamy); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Here, we have developed and fielded a new x-ray pinhole-imaging snout that exploits time-resolved penumbral imaging of low-emission hot spots in capsule implosion experiments at the National Ignition Facility (NIF). We report on results for a series of indirectly driven Be capsule implosions that aim at measuring x-ray Thomson scattering (XRTS) spectra at extreme density conditions near stagnation. In these implosions, x-ray emission at stagnation is reduced by 100 – 1000x compared to standard inertial confinement fusion (ICF) implosions to mitigate undesired continuum background in the XRTS spectra. Our snout design enables not only measurements of peak x-ray emission times, t_o, where standard ICF diagnostics would not record any signal, but also allows for inference of hot spots shapes. Measurement of t_o is crucial to account for shot-to-shot variations in implosion velocity and therefore to benchmark the achieved plasma conditions between shots and against radiation hydrodynamics simulations. Additionally, we used differential filtering to infer a hot spot temperature of 520 ± 80 eV, which is in good agreement with predictions from radiation hydrodynamic simulations. Here, we find that, despite fluctuations of the x-ray flash intensity of up to 5x, the emission time history is similar from shot to shot, and slightly asymmetric with respect to peak x-ray emission.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: AC02-76SF00515; AC52-07NA27344; 18-ERD-033

OSTI ID:: 1464605

Alternate ID(s):: OSTI ID: 1474201

Journal Information:: Review of Scientific Instruments, Vol. 89, Issue 10; ISSN 0034-6748

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 (18)

Platform for spectrally resolved x-ray scattering from imploding capsules at the National Ignition Facility Kraus, D.; Döppner, T.; Kritcher, A. L. Journal of Physics: Conference Series, Vol. 717 https://doi.org/10.1088/1742-6596/717/1/012067	journal	May 2016
Using penumbral imaging to measure micrometer size plasma hot spots in Gbar equation of state experiments on the National Ignition Facility Bachmann, B.; Kritcher, A. L.; Benedetti, L. R. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4891303	journal	November 2014
AB INITIO EQUATIONS OF STATE FOR HYDROGEN (H-REOS.3) AND HELIUM (He-REOS.3) AND THEIR IMPLICATIONS FOR THE INTERIOR OF BROWN DWARFS Becker, Andreas; Lorenzen, Winfried; Fortney, Jonathan J. The Astrophysical Journal Supplement Series, Vol. 215, Issue 2 https://doi.org/10.1088/0067-0049/215/2/21	journal	January 2014
Gated x-ray detector for the National Ignition Facility Oertel, John A.; Aragonez, Robert; Archuleta, Tom Review of Scientific Instruments, Vol. 77, Issue 10 https://doi.org/10.1063/1.2227439	journal	October 2006
Influence of argon impurities on the elastic scattering of x-rays from imploding beryllium capsules Saunders, A. M.; Chapman, D. A.; Kritcher, A. L. High Energy Density Physics, Vol. 26 https://doi.org/10.1016/j.hedp.2018.02.003	journal	March 2018
First beryllium capsule implosions on the National Ignition Facility Kline, J. L.; Yi, S. A.; Simakov, A. N. Physics of Plasmas, Vol. 23, Issue 5 https://doi.org/10.1063/1.4948277	journal	May 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
An in-flight radiography platform to measure hydrodynamic instability growth in inertial confinement fusion capsules at the National Ignition Facility Raman, K. S.; Smalyuk, V. A.; Casey, D. T. Physics of Plasmas, Vol. 21, Issue 7 https://doi.org/10.1063/1.4890570	journal	July 2014
Qualification of a high-efficiency, gated spectrometer for x-ray Thomson scattering on the National Ignition Facility Döppner, T.; Kritcher, A. L.; Neumayer, P. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4890253	journal	November 2014
X-ray penumbral imaging diagnostic developments at the National Ignition Facility Felker, Sean J.; Bachmann, Benjamin; Abu Shawareb, Hatim Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI https://doi.org/10.1117/12.2274611	conference	September 2017
The National Ignition Facility: Ushering in a new age for high energy density science Moses, E. I.; Boyd, R. N.; Remington, B. A. Physics of Plasmas, Vol. 16, Issue 4 https://doi.org/10.1063/1.3116505	journal	April 2009
Generation and characterisation of warm dense matter with intense lasers Riley, D. Plasma Physics and Controlled Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1361-6587/aa8dd5	journal	November 2017
High-speed three-dimensional plasma temperature determination of axially symmetric free-burning arcs Bachmann, B.; Kozakov, R.; Gött, G. Journal of Physics D: Applied Physics, Vol. 46, Issue 12 https://doi.org/10.1088/0022-3727/46/12/125203	journal	February 2013
Standard design for National Ignition Facility x-ray streak and framing cameras Kimbrough, J. R.; Bell, P. M.; Bradley, D. K. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3496990	journal	October 2010
First Measurements of Hydrodynamic Instability Growth in Indirectly Driven Implosions at Ignition-Relevant Conditions on the National Ignition Facility Smalyuk, V. A.; Casey, D. T.; Clark, D. S. Physical Review Letters, Vol. 112, Issue 18 https://doi.org/10.1103/PhysRevLett.112.185003	journal	May 2014
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
Resolving hot spot microstructure using x-ray penumbral imaging (invited) Bachmann, B.; Hilsabeck, T.; Field, J. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4959161	journal	August 2016
Ultrasmooth plasma polymerized coatings for laser fusion targets Letts, S. A.; Myers, D. W.; Witt, L. A. Journal of Vacuum Science and Technology, Vol. 19, Issue 3 https://doi.org/10.1116/1.571142	journal	September 1981

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