The colliding planar shocks platform to study warm dense matter at the National Ignition Facility-Reference-Cited by-同舟云学术

The colliding planar shocks platform to study warm dense matter at the National Ignition Facility

Published:2023-06-01 Issue:6 Volume:30 Page:
ISSN:1070-664X
Container-title:Physics of Plasmas
language:en
Short-container-title:

Author:

MacDonald M. J.¹²^ORCID,Di Stefano C. A.³^ORCID,Döppner T.¹^ORCID,Fletcher L. B.⁴^ORCID,Flippo K. A.³^ORCID,Kalantar D.¹^ORCID,Merritt E. C.³^ORCID,Ali S. J.¹^ORCID,Celliers P. M.¹^ORCID,Heredia R.¹,Vonhof S.⁵^ORCID,Collins G. W.⁶^ORCID,Gaffney J. A.¹^ORCID,Gericke D. O.⁷^ORCID,Glenzer S. H.⁴^ORCID,Kraus D.⁸⁹^ORCID,Saunders A. M.¹^ORCID,Schmidt D. W.³^ORCID,Wilson C. T.³,Zacharias R.¹^ORCID,Falcone R. W.²^ORCID

Affiliation:

1. Lawrence Livermore National Laboratory 1 , Livermore, California 94550, USA

2. Department of Physics, University of California 2 , Berkeley, California 94720, USA

3. Los Alamos National Laboratory 3 , Los Alamos, New Mexico 87545, USA

4. SLAC National Accelerator Laboratory 4 , Menlo Park, California 94025, USA

5. General Atomics 5 , San Diego, California 92186, USA

6. Departments of Physics and Astronomy, Mechanical Engineering, and Laboratory for Laser Energetics, University of Rochester 6 , Rochester, New York 14623, USA

7. Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick 7 , Coventry CV4 7AL, United Kingdom

8. Institute of Physics, University of Rostock 8 , 18059 Rostock, Germany

9. Helmholtz-Zentrum Dresden-Rossendorf 9 , 01328 Dresden, Germany

Abstract

We have developed an experimental platform at the National Ignition Facility that employs colliding planar shocks to produce warm dense matter with uniform conditions and enable high-precision equation of state measurements. The platform uses simultaneous x-ray Thomson scattering and x-ray radiography to measure the density, electron temperature, and ionization state in warm dense matter. The experimental platform is designed to create a large volume of uniform plasma (approximately 700×700×150μm3) at pressures approaching 100 Mbar and minimize the distribution of plasma conditions in the x-ray scattering volume, significantly improving the precision of the measurements. Here, we present the experimental design of the platform and compare hydrodynamic simulations to x-ray radiography data from initial experiments studying hydrocarbons, producing uniform densities within ±25% of the average probed condition. We show that the platform creates a homogeneous plasma that can be characterized using x-ray Thomson scattering. Thus, the new platform enables accurate measurements of plasma conditions necessary to test models for the equation of state and ionization potential depression in the warm dense matter regime.

Funder

National Nuclear Security Administration

Lawrence Livermore National Laboratory

Fusion Energy Sciences

Publisher

AIP Publishing

Subject

Condensed Matter Physics

Link

https://pubs.aip.org/aip/pop/article-pdf/doi/10.1063/5.0146624/17924647/062701_1_5.0146624.pdf

Reference61 articles.

1. Observations of Plasmons in Warm Dense Matter