Injection and transport properties of fast electrons in ultraintense laser-solid interactions

M. Coury, D. C. Carroll, A. P. L. Robinson, X. H. Yuan, C. M. Brenner, M. Burza, R. J. Gray, K. L. Lancaster, Y. T. Li, X. X. Lin, D. A. MacLellan, H. Powell, M. N. Quinn, O. Tresca, C. -G. Wahlstrom, D. Neely, P. McKenna

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Abstract

Fast electron injection and transport in solid foils irradiated by sub-picosecond-duration laser pulses with peak intensity equal to 4 x 10(20)W/cm(2) is investigated experimentally and via 3D simulations. The simulations are performed using a hybrid-particle-in-cell (PIC) code for a range of fast electron beam injection conditions, with and without inclusion of self-generated resistive magnetic fields. The resulting fast electron beam transport properties are used in rear-surface plasma expansion calculations to compare with measurements of proton acceleration, as a function of target thickness. An injection half-angle of similar to 50 degrees - 70 degrees is inferred, which is significantly larger than that derived from previous experiments under similar conditions.

Original languageEnglish
Article number043104
Number of pages7
JournalPhysics of Plasmas
Volume20
Issue number4
Early online date5 Apr 2013
DOIs
Publication statusPublished - Apr 2013

Keywords

  • plasma diagnostics
  • fast electrons
  • plasma transport processes
  • plasma simulation

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