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Cut-off energy of proton accelerated in experiment on SILEX-I is estimated, according to the front mechanism and rear side mechanism of interaction between ultrashort ultra-intense laser and solid target. The estimation according to the rear side mechanism agree well with experimental data. Meanwhile, the maximum proton energy accelerated in interaction of short laser pulse with solid targets on SILEX-I is also calculated: 11 MeV for the rear side mechanism and 2.0 MeV for the front side mechanism. Besides, the influence of prepulse to accelerating field is estimated by Multi2005 code and it can be neglected when signal-to-noise ratio is better than 108:1.

Type

Journal article

Journal

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Publication Date

01/08/2008

Volume

20

Pages

1373 - 1377