Abstract
An analysis of an electron spectrometer used to characterize fast electrons generated by ultraintense (1020Wcm−2) laser interaction with a preformed plasma of scale length measured by shadowgraphy is presented. The effects of fringing magnetic fields on the electron spectral measurements and the accuracy of density scale-length measurements are evaluated. 2D EPOCH PIC code simulations are found to be in agreement with measurements of the electron energy spectra showing that laser filamentation in plasma preformed by a prepulse is important with longer plasma scale lengths (>8 μm).
Original language | English |
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Article number | 043201 |
Number of pages | 10 |
Journal | Physical Review E |
Volume | 93 |
Issue number | 4 |
DOIs | |
Publication status | Published - 6 Apr 2016 |
Keywords
- laser-plasma
- preplasma
- electron energy distributions