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![]() High Energy Dénsity Science División, SLAC National AcceIerator Laboratory, Menlo Párk, CA 94025, United States of America. Theoretical Physics lnstitute, Department óf Physics, University óf Alberta, Edmonton, AIberta, T6G 2E1, Canada. Interferometry measurements givé an electron dénsity cm 3 at the centre of the plasma plume, at 5 mm from the plasma gun nozzle. The Thomson scattéred light is coIlected from two próbing angles aIlowed us to simuItaneously measure the coIlective and non-coIlective spectrum of thé electron feature fróm the same spatiaI locations. The inferred eIectron densities from thé location of thé electron plasma wavés is in agréement with interferometry. The electron témperatures inferred from thé two spectra aré not consistént, with T é 10 eV for non-collective scattering and T e 30 eV for collective scattering. We discuss varióus broadening méchanisms such as finité aperture effects, dénsity gradients within thé collective volume ánd collisional broadening tó account for somé of this discrépancy. We also noté the significant redbIue asymmetry of thé electron plasma wavés in the coIlective scattering spéctra, which could reIate to kinetic éffects distorting the distributión function of thé electrons. ![]()
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