Filamentation and Forward Brillouin Scatter of Entire Smoothed and Aberrated Laser Beams

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Laser-plasma interactions are sensitive to both the fine-scale speckle and the larger scale envelope intensity of the beam. For some time, simulations have been done on volumes taken from part of the laser beam cross-section, and the results from multiple simulations extrapolated to predict the behavior of the entire beam. However, extrapolation could very well miss effects of the larger scale structure on the fine-scale. The only definitive method is to simulate the entire beam. These very large calculations have been infeasible until recently, but they are now possible on massively parallel computers. Whole beam simulations show the dramatic difference ... continued below

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Still, C.H.; Berger, R.L.; Langdon, A.B.; Hinkel, D.E. & Williams, E.A. October 29, 1999.

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Laser-plasma interactions are sensitive to both the fine-scale speckle and the larger scale envelope intensity of the beam. For some time, simulations have been done on volumes taken from part of the laser beam cross-section, and the results from multiple simulations extrapolated to predict the behavior of the entire beam. However, extrapolation could very well miss effects of the larger scale structure on the fine-scale. The only definitive method is to simulate the entire beam. These very large calculations have been infeasible until recently, but they are now possible on massively parallel computers. Whole beam simulations show the dramatic difference in the propagation and break up of smoothed and aberrated beams.

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5,000 Kilobytes pages

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  • 41st Annual Meeting of the Division of Plasma Physics, Seattle, WA (US), 11/15/1999--11/19/1999

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  • Report No.: UCRL-JC-135006
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 790942
  • Archival Resource Key: ark:/67531/metadc719122

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  • October 29, 1999

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  • Sept. 29, 2015, 5:31 a.m.

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  • May 6, 2016, 2:29 p.m.

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Still, C.H.; Berger, R.L.; Langdon, A.B.; Hinkel, D.E. & Williams, E.A. Filamentation and Forward Brillouin Scatter of Entire Smoothed and Aberrated Laser Beams, article, October 29, 1999; California. (digital.library.unt.edu/ark:/67531/metadc719122/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.