dorsal/arxiv
View SchemaElectric field dynamics and ion acceleration in the self-channeling of a superintense laser pulse
| Authors | A. Macchi, F. Ceccherini, F. Cornolti, S. Kar, M. Borghesi |
|---|---|
| Categories | |
| ArXiv ID | physics/0701139 |
| URL | https://arxiv.org/abs/physics/0701139 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
The dynamics of electric field generation and radial acceleration of ions by a laser pulse of relativistic intensity propagating in an underdense plasma has been investigated using an one-dimensional electrostatic, ponderomotive model developed to interpret experimental measurements of electric fields [S. Kar et al, New J. Phys. *9*, 402 (2007)]. Ions are spatially focused at the edge of the charge-displacement channel, leading to hydrodynamical breaking, which in turns causes the heating of electrons and an "echo" effect in the electric field. The onset of complete electron depletion in the central region of the channel leads to a smooth transition to a "Coulomb explosion" regime and a saturation of ion acceleration.
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"abstract": "The dynamics of electric field generation and radial acceleration of ions by\na laser pulse of relativistic intensity propagating in an underdense plasma has\nbeen investigated using an one-dimensional electrostatic, ponderomotive model\ndeveloped to interpret experimental measurements of electric fields [S. Kar et\nal, New J. Phys. *9*, 402 (2007)]. Ions are spatially focused at the edge of\nthe charge-displacement channel, leading to hydrodynamical breaking, which in\nturns causes the heating of electrons and an \"echo\" effect in the electric\nfield. The onset of complete electron depletion in the central region of the\nchannel leads to a smooth transition to a \"Coulomb explosion\" regime and a\nsaturation of ion acceleration.",
"arxiv_id": "physics/0701139",
"authors": [
"A. Macchi",
"F. Ceccherini",
"F. Cornolti",
"S. Kar",
"M. Borghesi"
],
"categories": [
"physics.plasm-ph"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Electric field dynamics and ion acceleration in the self-channeling of a superintense laser pulse",
"url": "https://arxiv.org/abs/physics/0701139"
},
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