Collisional and collective effects in two dimensional model for fast-electron transport in refluxing regime
- Universita degli studi di Milano-Bicocca, Piazza della scienza 3, Milano 20126 (Italy)
- University Bordeaux, CEA, CNRS, CELIA (Centre Laser Intense at Applications), UMR 5107, F-33405 Talence (France)
- Universita degli studi di Milano, Via Celoria 20, Milano 20133 (Italy)
The relativistic laser-driven electron transport in partially or fully ionized matter has been investigated in many recent experiments. The high laser intensity achievable today (up to 10{sup 20} W/cm{sup 2}) allows to generate electron current density above 10{sup 11} A/cm{sup 2}. In this regime, electromagnetic effects start to be dominant over collisional ones. In this context, we have developed a simple 2D model for the fast electron transport accounting for (1) electric effects on the electron penetration range and (2) the electron refluxing in thin foils. We compare our model with those existing in literature and with some recent experimental results on fast electron transport in matter. The model predicts a maximum value for the electron penetration range in the region where the collisional and the resistive effects are comparable.
- OSTI ID:
- 22113373
- Journal Information:
- Physics of Plasmas, Vol. 20, Issue 1; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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