4.7 Article

Bulk heating of solid-density plasmas during high-intensity-laser plasma interactions

Journal

PHYSICAL REVIEW E
Volume 79, Issue 1, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.79.016406

Keywords

copper; foils; plasma density; plasma heating; plasma light propagation; plasma simulation; plasma sources; plasma temperature; X-ray spectroscopy

Funding

  1. U. S. Department of Energy under Cooperative Agreements [DE-FC5208NA28302]
  2. Office of Inertial Confinement Fusion [DE-FC02-ER54789]
  3. Fusion Science Center
  4. Office of Inertial Fusion Energy Science
  5. University of Rochester
  6. New York State Energy Research and Development Authority

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K-shell x-ray spectroscopy is used to study the interaction of small-mass copper foil targets (>20x20x2 mu m(3)) with a high-intensity (>10(19) W/cm(2)) laser pulse. Efficient bulk heating to greater than 200 eV is demonstrated using collisional-energy transfer from recirculating fast electrons. K-photon yields and bulk-electron temperatures calculated by three-dimensional numerical target-heating simulations are in good agreement with the experimental measurements.

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