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Influence of subpicosecond laser pulse duration on proton acceleration
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View: Figures


Image of FIG. 1.
FIG. 1.

Evolution of the maximum proton energy with time for , 57, and 111 fs.

Image of FIG. 2.
FIG. 2.

(a) Sharp-edge and (b) smooth-edge target maximum proton energy and laser absorption vs pulse duration.

Image of FIG. 3.
FIG. 3.

Maximum proton energy and absorption variations vs gradient length for the 30 fs laser pulse duration.

Image of FIG. 4.
FIG. 4.

Conversion efficiency of the laser energy into proton kinetic energy.

Image of FIG. 5.
FIG. 5.

Gradient length at back surface vs pulse duration.

Image of FIG. 6.
FIG. 6.

Snapshots of proton expansion at the time when the main pulse hits the front surface of the sharp-edge target for the , 192, and 246 fs simulations (the laser is incident from the left).

Image of FIG. 7.
FIG. 7.

Evolution of the hot electron temperature and density with for both profiles.

Image of FIG. 8.
FIG. 8.

Electrostatic field measured and computed from the hot electron density, temperature, and the gradient length with for (a) sharp-edge and (b) smooth-edge profiles.

Image of FIG. 9.
FIG. 9.

Variations in (squares) and (circles) with the pulse duration from 30 to 300 fs.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of subpicosecond laser pulse duration on proton acceleration