Fig. 2 | Communications Physics

Fig. 2

From: Enhanced target normal sheath acceleration using colliding laser pulses

Fig. 2

Enhancement of the proton production in the two-pulse case. a Proton spectra (dN/dE) after 700 fs in the reference case (blue), the two-pulse case (red), and cases with one 2.2 J laser pulse (black) and with two 0.55 J laser pulses but slightly asymmetric incidence angle (ϕ1 = 40° and ϕ2 = −50°, dashed purple). b Dependence of the maximum proton energy Emax (in MeV) as a function of the incidence angle ϕ. For the two-pulse case, the angles are ϕ and −ϕ. The black dashed lines indicate ϕ = 45° on which we mainly focus our analysis

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