Plasma scale-length effects on electron energy spectra in high-irradiance laser plasmas

O. Culfa, G. J. Tallents, A. K. Rossall, E. Wagenaars, C. P. Ridgers, C. D. Murphy, R. J. Dance, R. J. Gray, P. McKenna, C. D. R. Brown, S. F. James, D. J. Hoarty (+9 others)
2016 Physical review. E  
2016) Plasma scale-length effects on electron energy spectra in high-irradiance laser plasmas. Physical Review E, 93 (4). ISSN 1539-3755 , http://dx.An analysis of an electron spectrometer used to characterize fast electrons generated by ultra intense (10 20 W cm −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
more » ... ngth 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 pre pulse is important with longer plasma scale lengths (> 8 µm).
doi:10.1103/physreve.93.043201 pmid:27176413 fatcat:bc5o2ynfzzdj7pnvyvp2uuegje