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Hot Spot Evolution Measured by High-Resolution X-Ray Spectroscopy at the National Ignition Facility.
Gao, Lan; Kraus, B F; Hill, K W; Schneider, M B; Christopherson, A; Bachmann, B; Bitter, M; Efthimion, P; Pablant, N; Betti, R; Thomas, C; Thorn, D; MacPhee, A G; Khan, S; Kauffman, R; Liedahl, D; Chen, H; Bradley, D; Kilkenny, J; Lahmann, B; Stambulchik, E; Maron, Y.
Afiliación
  • Gao L; Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
  • Kraus BF; Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
  • Hill KW; Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
  • Schneider MB; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Christopherson A; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
  • Bachmann B; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Bitter M; Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
  • Efthimion P; Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
  • Pablant N; Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
  • Betti R; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
  • Thomas C; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
  • Thorn D; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • MacPhee AG; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Khan S; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Kauffman R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Liedahl D; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Chen H; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Bradley D; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Kilkenny J; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Lahmann B; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Stambulchik E; Faculty of Physics, Weizmann Institute of Science, Rehovot 7610001, Israel.
  • Maron Y; Faculty of Physics, Weizmann Institute of Science, Rehovot 7610001, Israel.
Phys Rev Lett ; 128(18): 185002, 2022 May 06.
Article en En | MEDLINE | ID: mdl-35594117
ABSTRACT
Evolution of the hot spot plasma conditions was measured using high-resolution x-ray spectroscopy at the National Ignition Facility. The capsules were filled with DD gas with trace levels of Kr and had either a high-density-carbon (HDC) ablator or a tungsten (W)-doped HDC ablator. Time-resolved measurement of the Kr Heß spectra, absolutely calibrated by a simultaneous time-integrated measurement, allows inference of the electron density and temperature through observing Stark broadening and the relative intensities of dielectronic satellites. By matching the calculated hot spot emission using a collisional-radiative code to experimental observations, the hot spot size and areal density are determined. These advanced spectroscopy techniques further reveal the effect of W dopant in the ablator on the hot spot parameters for their improved implosion performance.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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XML
PubMed Links
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos