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Control of energy distribution of the proton beam with an oblique incidence of the laser pulse
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10.1063/1.3099290
/content/aip/journal/pop/16/3/10.1063/1.3099290
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/3/10.1063/1.3099290
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Case A: the configuration of a laser pulse obliquely incident on a double layer target. [(b) and (c)] The spatial distribution of gold ions (thick disk), electrons (gas pattern), and protons (color scale) at . For protons, color corresponds to energy.

Image of FIG. 2.
FIG. 2.

The proton energy spectrum normalized by its maximum at for case A.

Image of FIG. 3.
FIG. 3.

The spatial distribution of the proton energy in the generated bunch. (a) Reconstructed initial distribution of protons according to their final energy. (b) The proton bunch with energy indicated by color at different moments of time, .

Image of FIG. 4.
FIG. 4.

(a) Case B: configuration of the target and laser pulse. The proton layer is shifted below the target center by half of its radius. The spatial distribution of gold ions (thick disk), electrons (gas pattern), and protons (color scale) at . For protons, color corresponds to energy.

Image of FIG. 5.
FIG. 5.

(a) Case C: configuration of the target and laser pulse. The proton layer is shifted below the target center by 2/3 of the radius of the proton layer in cases A and B, and its diameter is reduced by a factor of 1/3. The spatial distribution of the gold ions (thick disk), electrons (gas pattern), and protons (color scale) at . For protons, color corresponds to energy.

Image of FIG. 6.
FIG. 6.

The proton energy spectra normalized by the maximum in each case at . In the inset: the proton energy spectra normalized by the number of protons of case A.

Image of FIG. 7.
FIG. 7.

(a) Case D: configuration of the target and laser pulse. The diameter of the proton layer is the same as that of the first layer. The spatial distribution of the gold ions (thick disk), electrons (gas pattern), and protons (color scale) at . For protons, color corresponds to energy.

Image of FIG. 8.
FIG. 8.

The proton energy spread vs the laser pulse focus position with respect to the target center.

Image of FIG. 9.
FIG. 9.

The points at which the electric field component is traced in the simulation for case A.

Image of FIG. 10.
FIG. 10.

[(a) and (c)] The evolution of the electric field component averaged over the laser period . [(b) and (d)] Time integral seen at points 1–6 (Fig. 9) in the simulation for case A.

Image of FIG. 11.
FIG. 11.

The spatial distribution of particles at different times in the simulation for case A. The thick bar is a projection of the first layer (gold ions), the gas pattern denotes electrons, and the color scale indicates the proton energy.

Image of FIG. 12.
FIG. 12.

The electric field around the target at different times corresponding to Fig. 11. The electric field magnitude is shown.

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/content/aip/journal/pop/16/3/10.1063/1.3099290
2009-03-30
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Control of energy distribution of the proton beam with an oblique incidence of the laser pulse
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/3/10.1063/1.3099290
10.1063/1.3099290
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