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Self consistent model for ponderomotive ion acceleration of laser irradiated two species dense target plasmas
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10.1063/1.3702056
/content/aip/journal/pop/19/4/10.1063/1.3702056
http://aip.metastore.ingenta.com/content/aip/journal/pop/19/4/10.1063/1.3702056
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Charge separation layer maintained by the radiation pressure of the incident laser. The blue curve represents heavy ions, red represents light ions, and black curve refers to electrons. The region represents the electron sheath. The region is an ion sheath comprising of both the light and heavy ion species. comprises primarily of the heavy ion species and in the region the ions are undergoing coulomb explosion. is the region of undisturbed plasma.

Image of FIG. 2.
FIG. 2.

Density profiles of the ion species in the laser piston for and . The green curves represent heavier ions () and blue curves represent lighter ions (). (a) shows the ion sheaths for density ratio , (b) is for , and (c) is for . here is the laser wavelength.

Image of FIG. 3.
FIG. 3.

Velocity profiles of the ion species in the laser piston in the piston frame for and . The green curves represent heavier ions () and blue curves represent lighter ions (). (a) shows the local ion velocities with in the piston for density ratio , (b) is for and (c) is for .

Image of FIG. 4.
FIG. 4.

Electrostatic potential within the laser piston for and for different ratios of ion species.

Image of FIG. 5.
FIG. 5.

Time evolution of the number density of both the ion species normalized to their equilibrium densities. Blue curves represent carbon ions and green curves represent hydrogen. (a) shows the time evolution for and , whereas (b) is for and .

Image of FIG. 6.
FIG. 6.

Spatial profile of longitudinal electric field for and with at different times.

Image of FIG. 7.
FIG. 7.

Time evolution of the laser piston of a composite target with and with the incident laser amplitude .

Image of FIG. 8.
FIG. 8.

Cusp formation time with incident laser intensity for different target compositions keeping .

Image of FIG. 9.
FIG. 9.

Trajectories of ion beams comprising of and with incident velocity . and . Red curve is for and green for . The blue line represent the laser piston moving with velocity .

Image of FIG. 10.
FIG. 10.

Maximum permissible incident velocities for ion beams comprising of and . and .

Image of FIG. 11.
FIG. 11.

Reflected beam velocities corresponding to maximum permissible incident velocity for and . and .

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/content/aip/journal/pop/19/4/10.1063/1.3702056
2012-04-12
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Self consistent model for ponderomotive ion acceleration of laser irradiated two species dense target plasmas
http://aip.metastore.ingenta.com/content/aip/journal/pop/19/4/10.1063/1.3702056
10.1063/1.3702056
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