Details

Autor(en) / Beteiligte

• Psikal, J.
• Klimo, O.
• Limpouch, J.

Titel

2D particle-in-cell simulations of ion acceleration in laser irradiated submicron clusters including field ionization

Ist Teil von

• Physics of plasmas, 2012-04, Vol.19 (4), p.043107-043107-8

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The interaction of femtosecond laser pulses with submicron water clusters is studied here by two-dimensional particle-in-cell simulations. Field ionization is included in our simulations using Ammosov-Delone-Krainov ionization rate. We search for optimum laser and cluster parameters to obtain quasimonoenergetic beam of protons accelerated from the cluster. For the laser amplitude a 0 ≈ 3 used in recent experiments, the optimum cluster size is about 150nm for the generation of pronounced peak in proton energy distribution function at maximum energy and the optimum laser pulse duration is about 40-80 fs. Various initial density profiles of cluster plasma, formed due to insufficient laser pulse contrast and prepulses, are involved in this study, including underdense clusters.