Determination of Electron-Heated Target Temperatures in Petawatt Laser Experiments Using Soft X-Ray Diagnostics

POSTER

Abstract

The study of the transport of electrons, and the flow of energy into a solid target or dense plasma, is instrumental in the development of fast ignition inertial confinement fusion. Various solid targets (layered foils, cones, wires) were irradiated with the Titan Laser (4x10$^{19}$ Wcm$^{-2})$ at LLNL. Analysis has been done on soft x-ray images, spectra, and streaked images to determine the thermal electron temperatures on target back surfaces. Three independent methods (Soft X-Ray Spectrometer, 68eV XUV Imager, and 256eV XUV Imager) were used to confirm temperatures, while a fourth diagnostic (Streaked 68eV XUV Imager) provided time-resolved temperature information.

Authors

  • T.Y. Ma

    University of California-San Diego, Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, CA

  • F.N. Beg

    UCSD, Department of Mechanical and Aerospace Engineering, University of California San Diego, U.C. San Diego, Mechanical and Aerospace Engineering, La Jolla CA, University of California-San Diego, Department of Mechanical and Aerospace Engineering, University of California-San Diego, Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, CA

  • A.G. Macphee

    Lawrence Livermore National Laboratory, Lawrence Livermore National Laboratory, Livermore CA 94550, Lawrence Livermore National Lab

  • Hyun-kyung Chung

    Lawrence Livermore National Laboratory

  • M. Key

    Lawrence Livermore National Laboratory, Lawrence Livermore National Laboratory, Livermore CA 94550, Lawrence Livermore National Lab

  • A.J. Mackinnon

    Lawrence Livermore National Laboratory, Lawrence Livermore National Laboratory, Livermore CA 94550

  • Stephen Hatchett

    Lawrence Livermore National Laboratory

  • R.B. Stephens

    General Atomics, General Atomics, San Diego, CA

  • K. Akli

    General Atomics, College of Mathematical and Physical Sciences, The Ohio State University, Columbus, OH

  • L. Van Woerkom

    Ohio State University, Columbus OH, The Ohio State University, College of Mathematical and Physical Sciences, Ohio State University, College of Mathematical and Physical Sciences, The Ohio State University, Columbus, OH

  • Bingbing Zhang

    University of California-Davis