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Physics > Plasma Physics

Title: Scaling of ion trapping in laser-driven relativistically transparent plasma

Abstract: Ion trapping by ion wave breaking is investigated for laser-driven near-critical relativistically transparent plasma. Guided by three-dimensional particle-in-cell simulations, we study ion motion along the laser propagation direction within a 1D fluid model. The threshold for ion trapping is found, and the singular behaviour of longitudinal electric field, ion velocity, and ion density in the vicinity of the ion wave breaking point is derived analytically showing power-law distributions. The important result is that only a fraction of ions is trapped, different from the regime of hole boring. The number of trapped particles is determined and how it depends on target density for fixed laser intensity. Results are confirmed by the simulations.
Subjects: Plasma Physics (physics.plasm-ph)
Cite as: arXiv:1803.06358 [physics.plasm-ph]
  (or arXiv:1803.06358v1 [physics.plasm-ph] for this version)

Submission history

From: Bin Liu [view email]
[v1] Fri, 16 Mar 2018 18:10:34 GMT (251kb)