Characterization of Fast-Electron Sources Using kJ Pulses on OMEGA EP
P. M. Nilsona, C. Stoeckl, W. Theobald, J. F.Myatt, P. A. Jaanimagi, J. A. Delettrez,
B. Yaakobi, J. D. Zuegel, R. Bettia,b, D. D. Meyerhofera,b, T. C. Sangster,
P. K. Patelc, and A. J. Mackinnonc
Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14622
aalso Fusion Science Center for Extreme States of Matter, Laboratory for Laser Energetics, University of
Rochester
balso Mechanical Engineering and Physics Departments, University of Rochester
cLawrence Livermore National Laboratory, Livermore, CA 94550
Intense laser–solid interactions generate high-current electron sources with relativistic
energies that are important for advanced ignition experiments. Applications include rapid
heating for fast ignition and energy deposition in solid material for flash-radiography and
x-ray scattering experiments. Energy-coupling experiments carried out at the Omega EP
Laser Facility with up to 1.3 kJ of laser energy will be presented. The goal of these
experiments is to characterize the laser-induced fast-electron source. The effect of
preplasma formation, laser-pulse duration, and laser intensity on electron-energy
coupling will be discussed.
This work was supported by the U.S. D.O.E Office of Inertial Confinement
Fusion under Cooperative Agreement No. DE-FC52-08NA28302, the University of
Rochester, and the New York State Energy Research and Development Authority. The
support of DOE does not constitute an endorsement by DOE of the views expressed in
this article.
Prefer Oral
Amenable to discussion in working group: Yes – Working Group 1