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

• DOI: 10.1063/1.4979802
• Publication Date: 2017-04-04T19:02:37Z
• Authors: S. R. Nagel; H. Chen; J. Park; M. Foord; A. U. Hazi; T. J. Hilsabeck; S. M. Kerr; E. V. Marley; G. J. Williams
• Keywords: Picosecond; Temporal resolution

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