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Title: Time-resolved compression of a capsule with a cone to high density for fast-ignition laser fusion

The advent of high-intensity lasers enables us to recreate and study the behaviour of matter under the extreme densities and pressures that exist in many astrophysical objects. It may also enable us to develop a power source based on laser-driven nuclear fusion. Achieving such conditions usually requires a target that is highly uniform and spherically symmetric. Here we show that it is possible to generate high densities in a so-called fast-ignition target that consists of a thin shell whose spherical symmetry is interrupted by the inclusion of a metal cone. Using picosecond-time-resolved X-ray radiography, we show that we can achieve areal densities in excess of 300 mg cm -2 with a nanosecond-duration compression pulse -- the highest areal density ever reported for a cone-in-shell target. Such densities are high enough to stop MeV electrons, which is necessary for igniting the fuel with a subsequent picosecond pulse focused into the resulting plasma.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [1] ;  [4] ;  [1] ;  [2] ;  [1] ;  [1] ;  [5] ;  [1] ;  [1] ;  [5] ;  [5] ;  [1] more »;  [6] ;  [7] ;  [1] ;  [3] ;  [3] « less
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  2. Univ. of California, San Diego, CA (United States). Dept. of Mechanical and Aerospace Engineering
  3. General Atomics, San Diego, CA (United States)
  4. Osaka Univ., Suita (Japan)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Univ. of Bordeaux, CEA, CNRS, CELIA, Talence (France)
  7. Univ. of Reno, NV (United States)
Publication Date:
OSTI Identifier:
1165386
Report Number(s):
DOE-LLE--1944-1206
Journal ID: ISSN 2041-1723; 2013-179; 2172; TIC-1206; TRN: US1600646
Grant/Contract Number:
NA0001944
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 5; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY