Random Density Inhomogeneities and Focusability of the Output Pulses for Plasma-based Powerful Backward Raman Amplifiers

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Description

Random plasma density inhomogeneities may defocus the output pulses of powerful backward Raman amplifiers (BRA). Because of ultra-high intensities of even non-focused BRA outputs, such distortions, if occur, are then difficult to correct. We derive a simple expression for the largest BRA length for which the output pulse focusability is not yet spoiled. Interestingly, this limitation does not depend on the pump laser intensity. We also note a useful effect of plasma inhomogeneities that might help to suppress premature pump backscattering by thermal noise.

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763 Kilobytes pages

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Solodov, A. A.; Malkin, V. M. & Fisch, N. J. January 21, 2003.

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Description

Random plasma density inhomogeneities may defocus the output pulses of powerful backward Raman amplifiers (BRA). Because of ultra-high intensities of even non-focused BRA outputs, such distortions, if occur, are then difficult to correct. We derive a simple expression for the largest BRA length for which the output pulse focusability is not yet spoiled. Interestingly, this limitation does not depend on the pump laser intensity. We also note a useful effect of plasma inhomogeneities that might help to suppress premature pump backscattering by thermal noise.

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763 Kilobytes pages

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INIS; OSTI as DE00809966

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  • Other Information: PBD: 21 Jan 2003

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  • Report No.: PPPL-3771
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/809966 | External Link
  • Office of Scientific & Technical Information Report Number: 809966
  • Archival Resource Key: ark:/67531/metadc739597

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  • January 21, 2003

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 15, 2016, 9:51 p.m.

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Solodov, A. A.; Malkin, V. M. & Fisch, N. J. Random Density Inhomogeneities and Focusability of the Output Pulses for Plasma-based Powerful Backward Raman Amplifiers, report, January 21, 2003; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc739597/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.