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

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).

Metadata

Item Type:	Article
Authors/Creators:	Culfa, O. Tallents, G. J. https://orcid.org/0000-0002-1409-105X Rossall, A. K. https://orcid.org/0000-0002-0123-8163 Wagenaars, E. https://orcid.org/0000-0002-5493-3434 Ridgers, C. P. https://orcid.org/0000-0002-4078-0887 Murphy, C. D. https://orcid.org/0000-0003-3849-3229 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. https://orcid.org/0000-0002-0045-9909 Pikuz, S. A. Faenov, A. Ya Kampfer, T. Schulze, K. S. Uschmann, I. Woolsey, N. C. https://orcid.org/0000-0002-2444-9027
Copyright, Publisher and Additional Information:	© 2016, American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
Dates:	Published: 6 April 2016
Institution:	The University of York
Depositing User:	Pure (York)
Date Deposited:	29 Apr 2016 10:48
Last Modified:	21 Mar 2024 23:23
Published Version:	https://doi.org/10.1103/PhysRevE.93.043201
Status:	Published
Refereed:	Yes
Identification Number:	https://doi.org/10.1103/PhysRevE.93.043201
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