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Influence of a preplasma on electron heating and proton acceleration in ultraintense laser-foil interaction
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10.1063/1.3028274
/content/aip/journal/jap/104/10/10.1063/1.3028274
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3028274

Figures

Image of FIG. 1.
FIG. 1.

Temporal evolution of the target mass density in linear scale (a), of the electron density in logarithmic scale (b), and of the temperature in logarithmic scale (c) of a 500 nm Al target irradiated by a 150 fs, laser. The laser-foil interaction starts at . The laser propagates from top to bottom.

Image of FIG. 2.
FIG. 2.

Electron density profile at the target front for different time delays. The dot-dashed lines represent the lower and upper density bounds considered in PIC simulations.

Image of FIG. 3.
FIG. 3.

Absorbed energy rate versus the time delay for (red squares) and (black circles). denotes the solid target without preplasma.

Image of FIG. 4.
FIG. 4.

Electron distribution at the time of maximum absorption for , integrated over the whole simulation box.

Image of FIG. 5.
FIG. 5.

Longitudinal electric field spatially and frequency resolved (three-dimensional map) and local plasma frequency (green curve) for (a), (b), (c) and (d). The laser energy is .

Image of FIG. 6.
FIG. 6.

Electron (x,px) phase space for (a), (b), and (c) with . Note the varying scale of the -axis.

Image of FIG. 7.
FIG. 7.

Maximum kinetic energy of proton vs time delay for (red squares) and (black circles). The red star is for a 300 nm target and .

Image of FIG. 8.
FIG. 8.

Proton distribution for (a), (b), and (c) with .

Image of FIG. 9.
FIG. 9.

Forward moving electron distribution and spatial distribution of the quasistatic for [(a) and (d)], [(b) and (e)], and [(c) and (f)], respectively, with , 42 fs after the time of maximum absorption.

Tables

Generic image for table
Table I.

Overview of the target characteristics. is the density scale length of the subcritical plasma and is the length of the overcritical plasma region.

Generic image for table
Table II.

Electron temperature at the time of maximum absorption for .

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/content/aip/journal/jap/104/10/10.1063/1.3028274
2008-11-21
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of a preplasma on electron heating and proton acceleration in ultraintense laser-foil interaction
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3028274
10.1063/1.3028274
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