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Quasimonoenergetic proton beam from ultraintense-laser irradiation of a target with holed backside
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10.1063/1.3095869
/content/aip/journal/pop/16/3/10.1063/1.3095869
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/3/10.1063/1.3095869
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Case 1: simple flat target. The target has a thickness of and is located between and . (b) Case 2: holed-backside target. The target has a thickness of and is located between and . The simulation box is long and wide. The laser impinges on the target from the left.

Image of FIG. 2.
FIG. 2.

Transverse distribution of the longitudinal sheath electric field at . Laser focal radius is for case 1 (blue/dark line) and case 2 (green/gray line).

Image of FIG. 3.
FIG. 3.

Spatial distributions of [(a) and (b)] and [(c) and (d)] (in units of ) for the hole target at and , respectively. The dotted lines indicate the location of the hole.

Image of FIG. 4.
FIG. 4.

(a) The phase space distribution of all protons. (b) Proton density distribution along at (black/solid). The initial density profile is shown in red/dashed color. The dotted lines indicate the location of the hole.

Image of FIG. 5.
FIG. 5.

(a) Energy distribution of all the protons from the target (black/dark line) and the protons from the hole (green/gray line) at . (b) Proton energy spectra from the hole at , , and . (c) Energy spectra of all protons off the target backside at . (d) Angular distribution of the protons from the hole at .

Image of FIG. 6.
FIG. 6.

(a) Typical trajectories of protons initially located near the hole bottom. (b) Temporal evolution of the proton kinetic energy.

Image of FIG. 7.
FIG. 7.

Energy distribution of the protons at for different spot radii [(a) and (b) ] and hole diameters [(a) , , , and (b) , , , ]. The energy spectrum for all protons from the hole at is shown in (c). Here, the hole diameter and depth are and , respectively.

Image of FIG. 8.
FIG. 8.

Energy distribution of protons at for different hole depth : (a) , (b) , (c) , and (d) . Here, the hole diameter and spot size are and , respectively. Other parameters are the same as before.

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/content/aip/journal/pop/16/3/10.1063/1.3095869
2009-03-31
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quasimonoenergetic proton beam from ultraintense-laser irradiation of a target with holed backside
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/3/10.1063/1.3095869
10.1063/1.3095869
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