Two-dimensional time-resolved ultra-high speed imaging of K-alpha emission from short-pulse-laser interactions to observe electron recirculation

Nagel, S. R.; Chen, H.; Park, J.; Foord, M.; Hazi, A. U.; Hilsabeck, T. J.; Kerr, S. M.; Marley, E. V.; Williams, G. J.

doi:10.1063/1.4979802

Title: Two-dimensional time-resolved ultra-high speed imaging of K-alpha emission from short-pulse-laser interactions to observe electron recirculation

Journal Article · Tue Apr 04 00:00:00 EDT 2017 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4979802· OSTI ID:1368021

^[1]; Chen, H. ^[1]; Park, J. ^[1]; Foord, M. ^[1];

^[1]; Hilsabeck, T. J. ^[2];

^[3]; Marley, E. V. ^[1];

^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)
University of Alberta, Edmonton, Alberta T6G 2R3, Canada

Time resolved x-ray images with 7 ps resolution are recorded on relativistic short-pulse laser-plasma experiments using the dilation x-ray imager, a high-speed x-ray framing camera, sensitive to x-rays in the range of ≈1-17 keV. Furthermore, this capability enables a series of 2D x-ray images to be recorded at picosecond scales, which allows for the investigation of fast electron transport within the target with unprecedented temporal resolution. With an increase in the Kα-emission spot size over time we found that targets were thinner than the recirculation limit and is absent for thicker targets. Together with the observed polarization dependence of the spot size increase, this indicates that electron recirculation is relevant for the x-ray production in thin targets.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344; NA0001808

OSTI ID:: 1368021

Alternate ID(s):: OSTI ID: 1361807

Report Number(s):: LLNL-JRNL-717398; APPLAB

Journal Information:: Applied Physics Letters, Vol. 110, Issue 14; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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