X-ray emission from ultrashort UV-laser-pulse-produced plasmas

U. Teubner; Ingo Uschmann; Wolfgang Theobald; Eckhart Foerster

doi:10.1117/12.238027

12 April 1996 X-ray emission from ultrashort UV-laser-pulse-produced plasmas

U. Teubner, Ingo Uschmann, Wolfgang Theobald, Eckhart Foerster

Proceedings Volume 2770, Laser Optics '95 and ICONO '95: Superintense Laser Fields; (1996) https://doi.org/10.1117/12.238027
Event: Laser Optics '95, 1995, St. Petersburg, Russian Federation

Abstract

X-ray K- and L-shell emission from aluminum and carbon plasmas produced by subpicosecond UV-laser pulses has been investigated using various spectrographs. The spectra have been measured as a function of laser intensity in the range from 10¹⁴ W/cm² to 10¹⁸ W/cm². A computer simulation including reabsorption of the resonance lines has been performed and the observed and calculated spectra compared. Plasma parameters have been deduced by line emission and continuous emission observations. It has been found that for high laser intensities the resonance line emission and that from the satellites comes from the overdense region. A scaling of the electron temperature with the irradiance has been obtained. From the x-ray spectra measured at different laser intensities, the thresholds for the formation of hydrogen-like and helium-like ions in aluminum and carbon plasmas have been determined.

Citation Download Citation

U. Teubner, Ingo Uschmann, Wolfgang Theobald, and Eckhart Foerster "X-ray emission from ultrashort UV-laser-pulse-produced plasmas", Proc. SPIE 2770, Laser Optics '95 and ICONO '95: Superintense Laser Fields, (12 April 1996); https://doi.org/10.1117/12.238027

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