Quasimonoenergetic proton bunch generation by dual-peaked electrostatic-field acceleration in foils irradiated by an intense linearly polarized laser.
Phys Rev Lett
; 105(6): 065003, 2010 Aug 06.
Article
en En
| MEDLINE
| ID: mdl-20867985
ABSTRACT
It is found that stable proton acceleration from a thin foil irradiated by a linearly polarized ultraintense laser can be realized for appropriate foil thickness and laser intensity. A dual-peaked electrostatic field, originating from the oscillating and nonoscillating components of the laser ponderomotive force, is formed around the foil surfaces. This field combines radiation-pressure acceleration and target normal sheath acceleration to produce a single quasimonoenergetic ion bunch. A criterion for this mechanism to be operative is obtained and verified by two-dimensional particle-in-cell simulation. At a laser intensity of â¼5.5×10(22) W/cm(2), quasimonoenergetic GeV proton bunches are obtained with â¼100 MeV energy spread, less than 4° spatial divergence, and â¼50% energy conversion efficiency from the laser.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2010
Tipo del documento:
Article
País de afiliación:
Japón