. "Proton acceleration from the interaction of high contrast, 25 fs laser pulses at >1019 W=cm2 intensity with plastic foils covered with a single layer of regularly packed micro-spheres has been investigated experimentally. The proton cut-off energy has been measured as a function of the micro-sphere size and laser incidence angle for different substrate thickness, and for both P and S polarization. The presence of micro-spheres with a size comparable to the laser wavelength allows to increase the proton cut-off energy for both polarizations at small angles of incidence (108)." . "Vassura, L." . . "Velyhan, Andriy" . . "Proska, J." . "Micro-sphere layered targets efficiency in laser driven proton acceleration" . "Psikal, J." . "Micro-sphere layered targets efficiency in laser driven proton acceleration"@en . "Stolcova, L." . "I, P(ED1.1.00/02.0061), P(EE.2.3.20.0087), P(EE2.3.20.0279), P(GAP205/11/1165)" . . . "Baffigi, F." . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "5"^^ . "Martin, Ph." . . "0021-8979" . "114" . . . "Ceccotti, T." . . "RIV/68378271:_____/13:00399994" . . "Macchi, A." . "Novotn\u00FD, F." . "Proton acceleration from the interaction of high contrast, 25 fs laser pulses at >1019 W=cm2 intensity with plastic foils covered with a single layer of regularly packed micro-spheres has been investigated experimentally. The proton cut-off energy has been measured as a function of the micro-sphere size and laser incidence angle for different substrate thickness, and for both P and S polarization. The presence of micro-spheres with a size comparable to the laser wavelength allows to increase the proton cut-off energy for both polarizations at small angles of incidence (108)."@en . "beams"@en . "10.1063/1.4819239" . "1"^^ . "Sgattoni, A." . . "Gizzi, L. A." . "Micro-sphere layered targets efficiency in laser driven proton acceleration"@en . . . "Floquet, V." . . "Klimo, O." . . "Labate, L." . "Limpouch, J." . "Micro-sphere layered targets efficiency in laser driven proton acceleration" . "[1E600BB7E80F]" . "RIV/68378271:_____/13:00399994!RIV14-MSM-68378271" . . . "16"^^ . "00323911100018" . "8" . "88229" . . "Journal of Applied Physics" .