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Ion acceleration from laser-driven electrostatic shocks

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FIG. 1. Steady state electrostatic shock structure as seen from the shock frame. Electrons from the upstream region move freely, while electrons from the downstream region can be either free or trapped
Figure 2 illustrates the ion phase space for different ini- ini-tial density ratios C ¼ 2  100 between the two plasma slabs
FIG. 5. Shock Mach number (solid lines) and fraction of ions reflected from the upstream (dashed lines) as a function of the initial Mach number of the relative drift between two plasma slabs/regions for C ¼ H ¼ 1.
FIG. 7. Electric field structure and accel- accel-erated ion spectrum from the interaction of two finite plasma slabs with a density ratio (a) and (b) C ¼ 2, (c) and (d) C ¼ 10, and (e) and (f) C ¼ 10 followed by an exponentially decreasing profile.
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