TEMF, TU Darmstadt, Darmstadt, Germany
GSI, Darmstadt, Germany
[1] http://www.txcorp.com/products/VORPAL/
[2] M. Passoni et al., Phys Rev E 69, 026411 (2004)
[3] P. Mora, Phys. Rev. Lett., 90, 185002 (2003)
| Paper | Title | Page |
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| FRSAI3 | PIC Simulations of Laser Ion Acceleration via TNSA | 290 |
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The laser acceleration of protons via the TNSA (Target Normal Sheath Acceleration) mechanism from a thin metal foil (few micrometer) interacting with intense and short (several 100 fs) laser pulse is investigated by using 1D and 2D particle-in-cell electro-magnetic VORPAL [1] simulations. The protons originate from the very thin hydrogen-rich contamination layer on the target rear surface. In the 1D view we have found that two models well describe the longitudinal acceleration in the two extreme cases: quasi-static acceleration [2] for mono-layers and isothermal plasma expansion [3] for thick layers. The grid heating, which is the most important issue in 2D simulations, and its effect on the proton acceleration is discussed. The required numerical parameters and boundary conditions for stable and reliable 2D simulations are also presented.
[1] http://www.txcorp.com/products/VORPAL/ [2] M. Passoni et al., Phys Rev E 69, 026411 (2004) [3] P. Mora, Phys. Rev. Lett., 90, 185002 (2003) |
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Slides FRSAI3 [4.325 MB] | |