Plasma scale length effects on protons generated in ultra-intense laser–plasmas. (22nd December 2016)

• Record Type: Journal Article
• Authors: Culfa, O.; Tallents, G.J.; Korkmaz, M.E.; Rossall, A.K.; Wagenaars, E.; Ridgers, C.P.; Murphy, C.D.; Booth, N.; Carroll, D.C.; Wilson, L.A.; Lancaster, K.L.; Woolsey, N.C.
• Is Part Of: Laser and particle beams. Volume 35:Number 1(2017)
• Page Start: 58
• Page End: 63
• Publication Date: 2016-12-22
• Subjects: High-power lasers, -- Laser–plasma interactions, -- Proton acceleration; Laser beams -- Periodicals; Particle beams -- Periodicals; 535.5
• DOI: 10.1017/S0263034616000811
• Languages: English
• ISSNs: 0263-0346

Abstract

Abstract: 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.