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Efficient laser-overdense plasma coupling via surface plasma waves and steady magnetic field generation
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10.1063/1.3646520
/content/aip/journal/pop/18/10/10.1063/1.3646520
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/10/10.1063/1.3646520

Figures

Image of FIG. 1.
FIG. 1.

(Color online) x component of the SPW field and the exciting laser field in the xy plane (left: vacuum, right: plasma, the modulated surface being at x = 240), at its maximum amplitude (ωt Emax  = 460). The SPW is excited at the plasma surface by a pulse of intensity . The field is in units of E 0, and the lengths are in units of k −1.

Image of FIG. 2.
FIG. 2.

Plot of the laser absorption ratio as a function of the laser parameter . In dark grey filled circle, the laser absorption ratio in the case where the surface plasma wave is excited, and in light grey filled diamond, the laser absorption ratio in the case of a flat interface.

Image of FIG. 3.
FIG. 3.

Plot of the amplification factor η = E sw /E Lx as a function of the laser parameter a 0, where E sw is the component of the SPW field along the x-direction and E Lx is the laser one.

Image of FIG. 4.
FIG. 4.

(Color online) For , quasi static magnetic field in the xy plane, at ωt Emax  = 460 (a) (in dotted line, the initial plasma surface is reported), and corresponding electron density isocontours from 1 to 25n c (b). Quasi static magnetic field in the xy plane at a latter time ωt = 600 (c). The magnetic field is in units of B 0, and the lengths are in units of k −1.

Image of FIG. 5.
FIG. 5.

Plot of the absolute value of the negative quasi-static magnetic field |B z | at ωt = 600 (a) as a function of the maximum of the SPW field E sw along the x-direction and (b) as a function of the a 0 value of the laser pulse which excites the SPW. The electric field is in units of E 0 and the magnetic field in units of B 0. In the small frame: zoom on the low intensity range.

Image of FIG. 6.
FIG. 6.

(Color online) For and in the case where the ions are fixed, quasi static magnetic field in the xy plane, at ωt Emax  = 460. The magnetic field is given in units of B 0, and the lengths are in units of k −1.

Image of FIG. 7.
FIG. 7.

(Color online) Quasi static magnetic field in the xy plane, at ωt ∼ ωt Emax  = 460 (a) and corresponding electron density isocontours in the xy plane (b) (given in particles per point). (c) Quasi static magnetic field in the xy plane at ωt = 600. The laser intensity and the target density were and n e  = 25n c . The magnetic field in units of B 0, and the lengths are in units of k −1.

Image of FIG. 8.
FIG. 8.

(Color online) Quasi static magnetic field in the xy plane, at ωt ∼ ωt Emax  = 460 in the case of a flat surface localized at kx = 240 (no SPW). The laser intensity and the target density were and n e  = 25n c . The magnetic field in units of B 0, and the lengths are in units of k −1.

Tables

Generic image for table
Table I.

Absorption and SPW field amplification factor, η, as a function of the laser intensity and the electron plasma density.

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/content/aip/journal/pop/18/10/10.1063/1.3646520
2011-10-11
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Efficient laser-overdense plasma coupling via surface plasma waves and steady magnetic field generation
http://aip.metastore.ingenta.com/content/aip/journal/pop/18/10/10.1063/1.3646520
10.1063/1.3646520
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