Hot Spot Evolution Measured by High-Resolution X-Ray Spectroscopy at the National Ignition Facility.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
06 May 2022
Historique:
received: 02 07 2021
revised: 19 01 2022
accepted: 16 03 2022
entrez: 20 5 2022
pubmed: 21 5 2022
medline: 21 5 2022
Statut: ppublish

Résumé

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 Heβ 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.

Identifiants

DOI: 10.1103/PhysRevLett.128.185002 PMID: 35594117
pubmed: 35594117
doi: 10.1103/PhysRevLett.128.185002
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

185002

Auteurs

Lan Gao (L)

Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.

B F Kraus (BF)

Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.

K W Hill (KW)

Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.

M B Schneider (MB)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

A Christopherson (A)

Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.

B Bachmann (B)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

M Bitter (M)

Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.

P Efthimion (P)

Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.

N Pablant (N)

Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.

R Betti (R)

Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.

C Thomas (C)

Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.

D Thorn (D)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

A G MacPhee (AG)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

S Khan (S)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

R Kauffman (R)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

D Liedahl (D)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

H Chen (H)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

D Bradley (D)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

J Kilkenny (J)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

B Lahmann (B)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

E Stambulchik (E)

Faculty of Physics, Weizmann Institute of Science, Rehovot 7610001, Israel.

Y Maron (Y)

Faculty of Physics, Weizmann Institute of Science, Rehovot 7610001, Israel.

Classifications MeSH