DSpace Arşivi :: by Yazar "Ridgers, C. P." değerine göre listeleniyor

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Plasma scale length effects on protons generated in ultra-intense laser-plasmas
(Cambridge Univ Press, 2017) Culfa, Özgür; Tallents, G. J.; Korkmaz, M. E.; Rossall, A. K.; Wagenaars, E.; Ridgers, C. P.
The energy spectra of protons generated by ultra-intense (10(20) W cm(-2)) laser interactions with a preformed plasma of scale length measured by shadowgraphy are presented. The effects of the preformed plasma on the proton beam temperature and the number of protons are evaluated. Two-dimensional EPOCH particle-in-cell code simulations of the proton spectra are found to be in agreement with measurements over a range of experimental parameters.
Plasma scale-length effects on electron energy spectra in high-irradiance laser plasmas
(Amer Physical Soc, 2016) Culfa, Özgür; Tallents, G. J.; Rossall, A. K.; Wagenaars, E.; Ridgers, C. P.; Murphy, C. D.; Dance, R. J.
An analysis of an electron spectrometer used to characterize fast electrons generated by ultraintense (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 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 mu m).