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Proceedings Paper

Observation of nonsequential ionization of helium and its impact on intensity monitoring
Author(s): David N. Fittinghoff; Paul Robert Bolton; Britton Chang; Kenneth C. Kulander
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Paper Abstract

We have measured the ion yields for helium and neon ionized by 120 femtosecond, 614 nanometer laser pulses with intensities up to 1016 watts per square centimeter. We have found that the He II and Ne II data exhibit features incompatible with standard nonresonant sequential ionization. These features reduce the usefulness of optical field ionization for monitoring laser intensity. For the experiment, we expect dynamic resonances to have little effect on the ionization, and we attribute the features to nonsequential ionization based on the simultaneous saturation of the features and the singly ionized charge states.

Paper Details

Date Published: 8 July 1993
PDF: 7 pages
Proc. SPIE 1860, Short-Pulse High-Intensity Lasers and Applications II, (8 July 1993); doi: 10.1117/12.147579
Show Author Affiliations
David N. Fittinghoff, Lawrence Livermore National Lab. (United States)
Paul Robert Bolton, Lawrence Livermore National Lab. (United States)
Britton Chang, Lawrence Livermore National Lab. (United States)
Kenneth C. Kulander, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1860:
Short-Pulse High-Intensity Lasers and Applications II
Hector A. Baldis, Editor(s)

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