Radiative shocks produced from spherical cryogenic implosions at the National Ignition Facility

Pak, A.; Divol, L.; Gregori, G.; Weber, S.; Atherton, J.; Bennedetti, R.; Bradley, D. K.; Callahan, D.; Dewald, E.; Doppner, T.; Edwards, M. J.; Glenn, S.; Hicks, D.; Izumi, N.; Jones, O. S.; Khan, S. F.; Kilkenny, J. D.; Kline, J. L.; Kyrala, G. A.; Lindl, J.; Landen, O. L.; LePape, S.; Ma, T.; MacPhee, A.; MacGowan, B. J.; Mackinnon, A. J.; Masse, L.; Meezan, N. B.; Moody, J. D.; Moses, E. I.; Olson, R. E.; Ralph, J. E.; Park, H. -S.; Remmington, B. A.; Ross, J. S.; Tommasini, R.; Town, R. P. J.; Smalyuk, V.; Glenzer, S. H.; Hsing, W. W.; Robey, H. F.; Grim, G. P.; Frenje, J. A.; Casey, D. T.; Johnson, M. G.

doi:10.1063/1.4805081

Title: Radiative shocks produced from spherical cryogenic implosions at the National Ignition Facility

Journal Article · Mon May 20 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4805081· OSTI ID:1240056

Pak, A. ^[1]; Divol, L. ^[1]; Gregori, G. ^[2]; Weber, S. ^[1]; Atherton, J. ^[1]; Bennedetti, R. ^[1]; Bradley, D. K. ^[1]; Callahan, D. ^[1]; Dewald, E. ^[1]; Doppner, T. ^[1]; Edwards, M. J. ^[1]; Glenn, S. ^[1]; Hicks, D. ^[1]; Izumi, N. ^[1]; Jones, O. S. ^[1]; Khan, S. F. ^[1]; Kilkenny, J. D. ^[3]; Kline, J. L. ^[4]; Kyrala, G. A. ^[4]; Lindl, J. ^[1] more »

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of Oxford, Oxford (United Kingdom)
General Atomics, San Diego, CA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
CEA/DAM/DIF, Arpajon (France)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Spherically expanding radiative shock waves have been observed from inertially confined implosion experiments at the National Ignition Facility. In these experiments, a spherical fusion target, initially 2 mm in diameter, is compressed via the pressure induced from the ablation of the outer target surface. At the peak compression of the capsule, x-ray and nuclear diagnostics indicate the formation of a central core, with a radius and ion temperature of ~20 μm and ~ 2 keV, respectively. This central core is surrounded by a cooler compressed shell of deuterium-tritium fuel that has an outer radius of ~40 μm and a density of >500 g/cm³. Using inputs from multiple diagnostics, the peak pressure of the compressed core has been inferred to be of order 100 Gbar for the implosions discussed here. Furthermore, the shock front, initially located at the interface between the high pressure compressed fuel shell and surrounding in-falling low pressure ablator plasma, begins to propagate outwards after peak compression has been reached.

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

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1240056

Report Number(s):: LLNL-JRNL-609093; PHPAEN

Journal Information:: Physics of Plasmas, Vol. 20, Issue 5; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

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Cited by: 18 works

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