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

An analysis of an electron spectrometer used to characterize fast electrons generated by ultraintense (10^{20}Wcm^{-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 t...

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Bibliographic Details
Published in:Physical review. E 2016-04, Vol.93 (4), p.043201-043201, Article 043201
Main Authors: Culfa, O, Tallents, G J, Rossall, A K, Wagenaars, E, Ridgers, C P, Murphy, C D, Dance, R J, Gray, R J, McKenna, P, Brown, C D R, James, S F, Hoarty, D J, Booth, N, Robinson, A P L, Lancaster, K L, Pikuz, S A, Faenov, A Ya, Kampfer, T, Schulze, K S, Uschmann, I, Woolsey, N C
Format: Article
Language:English
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Summary:An analysis of an electron spectrometer used to characterize fast electrons generated by ultraintense (10^{20}Wcm^{-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).
ISSN:2470-0045
2470-0053
DOI:10.1103/PhysRevE.93.043201