title: 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 (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).
authors.affiliation: Department of Physics, Karamanoglu MehmetBey University, Karaman, Turkey.|York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: O
authors.initials: O
authors.lastname: Culfa
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: G J
authors.initials: GJ
authors.lastname: Tallents
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: A K
authors.initials: AK
authors.lastname: Rossall
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: E
authors.initials: E
authors.lastname: Wagenaars
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: C P
authors.initials: CP
authors.lastname: Ridgers
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: C D
authors.initials: CD
authors.lastname: Murphy
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: R J
authors.initials: RJ
authors.lastname: Dance
authors.affiliation: SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
authors.forename: R J
authors.initials: RJ
authors.lastname: Gray
authors.affiliation: SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
authors.forename: P
authors.initials: P
authors.lastname: McKenna
authors.affiliation: AWE, Aldermaston, Reading, Berkshire RG7 4PR, United Kingdom.
authors.forename: C D R
authors.initials: CD
authors.lastname: Brown
authors.affiliation: AWE, Aldermaston, Reading, Berkshire RG7 4PR, United Kingdom.
authors.forename: S F
authors.initials: SF
authors.lastname: James
authors.affiliation: AWE, Aldermaston, Reading, Berkshire RG7 4PR, United Kingdom.
authors.forename: D J
authors.initials: DJ
authors.lastname: Hoarty
authors.affiliation: CLF, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: N
authors.initials: N
authors.lastname: Booth
authors.affiliation: CLF, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: A P L
authors.initials: AP
authors.lastname: Robinson
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.|CLF, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: K L
authors.initials: KL
authors.lastname: Lancaster
authors.affiliation: Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.
authors.forename: S A
authors.initials: SA
authors.lastname: Pikuz
authors.affiliation: Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia.|Osaka University, Suita, Osaka 656-0871, Japan.
authors.forename: A Ya
authors.initials: AY
authors.lastname: Faenov
authors.affiliation: Friedrich Schiller University of Jena, D-07743 Jena, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Kampfer
authors.affiliation: Friedrich Schiller University of Jena, D-07743 Jena, Germany.
authors.forename: K S
authors.initials: KS
authors.lastname: Schulze
authors.affiliation: Friedrich Schiller University of Jena, D-07743 Jena, Germany.
authors.forename: I
authors.initials: I
authors.lastname: Uschmann
authors.affiliation: York Plasma Institute, The Department of Physics, The University of York, York YO10 5DD, United Kingdom.
authors.forename: N C
authors.initials: NC
authors.lastname: Woolsey