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Requirements for a 4ω Thomson scattering system on megajoule scale laser facilities

Depierreux, S. ; Tassin, V. ; Neuville, C. ; Katz, J.

Review of scientific instruments, 2020-08, Vol.91 (8), p.083508-083508 [Periódico revisado por pares]

Melville: American Institute of Physics

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  • Título:
    Requirements for a 4ω Thomson scattering system on megajoule scale laser facilities
  • Autor: Depierreux, S. ; Tassin, V. ; Neuville, C. ; Katz, J.
  • Assuntos: Acoustic resonance ; Configurations ; Diagnostic systems ; Electron plasma ; Fluid dynamics ; Fluid flow ; Hydrodynamics ; Laser beams ; Lasers ; Order parameters ; Plasma ; Plasma waves ; Scientific apparatus & instruments ; Thomson scattering
  • É parte de: Review of scientific instruments, 2020-08, Vol.91 (8), p.083508-083508
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: With the arrival of megajoule class laser facilities, the features of laser-produced plasmas are evolving toward unprecedented high electron temperatures reached in the environment of a cm-scale indirect-drive Hohlraum for a few tens of nanoseconds. In this context, the need for in situ experimental characterization of the plasma parameters becomes critical in order to test hydrodynamics simulations in these novel conditions. Taking advantage of the progress achieved in the last 40 years, Thomson scattering has become a classic diagnostic in the characterization of laser produced plasmas. However, the many beam configuration of the megajoule scale experiments makes the measurements increasingly complex because the Thomson scattering signals produced by the 351 nm heaters themselves dominate the plasma emission around 263 nm, a wavelength range typically of interest when a 4ω Thomson probe is used. This paper reviews the requirements for and the potential of a 4ω Thomson scattering system to be operated on such 351 nm megajoule scale facilities in order to characterize the hot (Te > 3 keV) plasmas produced in the indirect-drive irradiation of a Hohlraum. It is found that the configuration of the diagnostic could be optimized in order to enable the detection of the ion acoustic resonances over a large domain of plasma parameters. The results for the electron plasma wave resonances are also given.
  • Editor: Melville: American Institute of Physics
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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