Hydrodynamic motion of electron beam heated warm dense foils

POSTER

Abstract

Foils of Al, Ti, Ni, and Cu are heated isochorically by an electron bunch with ~100 ns pulse length, energy of 19.8 MeV and current of 1.7 kA. The electron bunch is focused to a spot size of ~2 mm onto each foil. The corresponding hydrodynamic motion of the foils is measured instantaneously once electron energy deposition begins with Photonic Doppler Velocimetry (PDV). PDV provides a measurement of the foil velocity, inferred pressure within the foil, and hydrodynamic disassembly time. Electron energy deposition into these foils was simulated utilizing a new capability in the HELIOS-CR code. Simulated results of velocity and plasma pressure profiles of the various foils are compared with LASNEX simulations and experimental measurements.

*This work was supported by the National Nuclear Security Administration of the U.S. Department of Energy under Contract No. DE-AC52-06NA25396.

Presenters

  • Payson Dieffenbach

    • Los Alamos National Laboratory
    • University of Tennessee, Knoxville, Los Alamos National Laboratory

Authors

  • Payson Dieffenbach

    • Los Alamos National Laboratory
    • University of Tennessee, Knoxville, Los Alamos National Laboratory

  • David S Montgomery

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Heidi E Morris

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Nicholas Ramey

    • Los Alamos National Laboratory

  • Joshua Coleman

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab