High energy electrons,nuclear phenomena andheating in petawatt laser-solid experiments

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The Petawatt laser at LLNL has opened a new regime of laser-matter interactions in which the quiver motion of plasma electrons is fully relativistic with energies extending well above the threshold for nuclear processes. In addition to -few MeV ponderomotive electrons produced in ultra-intense laser-solid interactions, we have found a high energy component of electrons extending to -100 MeV apparently from relativistic self-focusing and plasma acceleration in the underdense pre-formed plasma. The generation of hard bremsstrahlung, photo-nuclear reactions, and preliminary evidence for positron-electron pair production will be discussed.

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Hatchett, S P; W, A; Cowan, T. E.; Ditmire, T.; Dong, B.; Fountain, W. et al. January 15, 1999.

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The Petawatt laser at LLNL has opened a new regime of laser-matter interactions in which the quiver motion of plasma electrons is fully relativistic with energies extending well above the threshold for nuclear processes. In addition to -few MeV ponderomotive electrons produced in ultra-intense laser-solid interactions, we have found a high energy component of electrons extending to -100 MeV apparently from relativistic self-focusing and plasma acceleration in the underdense pre-formed plasma. The generation of hard bremsstrahlung, photo-nuclear reactions, and preliminary evidence for positron-electron pair production will be discussed.

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1.6 Megabytes

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  • 25th European Conference on Laser Interaction with Matter, Formia, Italy, May 4-8, 1998

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  • Other: DE00007823
  • Report No.: UCRL-JC-133031
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 7823
  • Archival Resource Key: ark:/67531/metadc725174

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  • January 15, 1999

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  • Sept. 29, 2015, 5:31 a.m.

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  • July 13, 2017, 3:25 p.m.

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Hatchett, S P; W, A; Cowan, T. E.; Ditmire, T.; Dong, B.; Fountain, W. et al. High energy electrons,nuclear phenomena andheating in petawatt laser-solid experiments, article, January 15, 1999; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc725174/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.