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X-ray scattering measurements on imploding CH spheres at the National Ignition Facility.
Kraus, D; Chapman, D A; Kritcher, A L; Baggott, R A; Bachmann, B; Collins, G W; Glenzer, S H; Hawreliak, J A; Kalantar, D H; Landen, O L; Ma, T; Le Pape, S; Nilsen, J; Swift, D C; Neumayer, P; Falcone, R W; Gericke, D O; Döppner, T.
Affiliation
  • Kraus D; Department of Physics, University of California, Berkeley, California 94720, USA.
  • Chapman DA; Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.
  • Kritcher AL; Plasma Physics Group, Radiation Physics Department, AWE plc, Reading RG7 4PR, United Kingdom.
  • Baggott RA; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Bachmann B; Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.
  • Collins GW; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Glenzer SH; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hawreliak JA; SLAC National Accelerator Laboratory, Menlo Park, California 94309, USA.
  • Kalantar DH; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Landen OL; Institute for Shock Physics, Washington State University, Pullman, Washington 99164, USA.
  • Ma T; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Le Pape S; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Nilsen J; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Swift DC; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Neumayer P; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Falcone RW; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Gericke DO; GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany.
  • Döppner T; Department of Physics, University of California, Berkeley, California 94720, USA.
Phys Rev E ; 94(1-1): 011202, 2016 Jul.
Article in En | MEDLINE | ID: mdl-27575070
ABSTRACT
We have performed spectrally resolved x-ray scattering measurements on highly compressed polystyrene at pressures of several tens of TPa (100 Mbar) created by spherically convergent shocks at the National Ignition Facility. Scattering data of line radiation at 9.0 keV were recorded from the dense plasma shortly after shock coalescence. Accounting for spatial gradients, opacity effects, and source broadening, we demonstrate the sensitivity of the elastic scattering component to carbon K-shell ionization while at the same time constraining the temperature of the dense plasma. For six times compressed polystyrene, we find an average temperature of 86 eV and carbon ionization state of 4.9, indicating that widely used ionization models need revision in order to be suitable for the extreme states of matter tested in our experiment.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev E Year: 2016 Type: Article Affiliation country: United States
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev E Year: 2016 Type: Article Affiliation country: United States