Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Plasma Physics
Volume 57, Number 12
Monday–Friday, October 29–November 2 2012; Providence, Rhode Island
Session NI2: ICF Implosions
9:30 AM–12:30 PM,
Wednesday, October 31, 2012
Room: Ballroom DE
Chair: Mordecai Rosen, Lawrence Livermore National Laboratory
Abstract ID: BAPS.2012.DPP.NI2.5
Abstract: NI2.00005 : X-ray Thomson scattering measurements of temperature and density from multi-shocked CH capsules*
11:30 AM–12:00 PM
Preview Abstract Abstract
(University of California Berkeley)
To achieve the high level of compression, at low entropy, needed for inertial confinement fusion currently requires the use of multiple and precisely timed shock waves . While x-ray Thomson scattering has previously been applied to isochorically heated matter in many planar shocked systems , we have performed proof-of-principle measurements of the electron densities, temperatures, and ionization states of spherically compressed multi-shocked CH capsules through the use of spectrally resolved x-ray Thomson scattering. A total of 13.5 kJ incident on a CH shell (45 beams at the Omega laser system), are used to compress a 70 micron thick CH shell above solid-mass density using three coalescing shocks. Separately, a laser-produced Zinc He alpha x-ray source at 9 keV delayed 200 ps - 800 ps in time after maximum compression is used to probe the plasma under a non-collective scattering geometry. The data show high compression of less than 8 g/cc consistent with radiation-hydrodynamic simulations that use adequate coalescence of the three shocks. These results are compared with independent experiments in CH that use counter-propagating shocks or highly compressed implosions. We show that x-ray Thomson scattering allows probing extreme states of Warm Dense Matter and enables a complete description of the time-dependent hydrodynamic evolution of shock-compressed CH.\\[4pt]  S. W. Haan et al., Nucl. Fusion 44, S171 (2004).\\[0pt]  S. H. Glenzer et al., Rev. Mod. Phys. 81, 1625 (2009).
*Prepared by LLNL under Contract DE-AC52-07NA27344 and supported by LDRD grant 11-ER-050.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2012.DPP.NI2.5
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