Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Proton acceleration from high-contrast short pulse lasers interacting with sub-micron thin foils
AU - Petrov, G. M.
AU - McGuffey, C.
AU - Thomas, A. G. R.
AU - Krushelnick, K.
AU - Beg, F. N.
PY - 2016/2/7
Y1 - 2016/2/7
N2 - A theoretical study complemented with published experimental data of proton acceleration from sub-micron (thickness <1 mu m) foils irradiated by ultra-high contrast (>10(10)) short pulse lasers is presented. The underlying physics issues pertinent to proton acceleration are addressed using two-dimensional particle-in-cell simulations. For laser energy epsilon 4 J (I > 5 x 10(20) W/cm(2)), for which the measured maximum proton energies were much lower than predicted by scaling and these simulations. This unexpected behavior could not be explained within the frame of the model, and we conjecture that pre-pulses preceding the main pulse by picoseconds may be responsible. If technological issues can be resolved, energetic proton beams could be generated for a wide range of applications such as nuclear physics, radiography, and medical science.
AB - A theoretical study complemented with published experimental data of proton acceleration from sub-micron (thickness <1 mu m) foils irradiated by ultra-high contrast (>10(10)) short pulse lasers is presented. The underlying physics issues pertinent to proton acceleration are addressed using two-dimensional particle-in-cell simulations. For laser energy epsilon 4 J (I > 5 x 10(20) W/cm(2)), for which the measured maximum proton energies were much lower than predicted by scaling and these simulations. This unexpected behavior could not be explained within the frame of the model, and we conjecture that pre-pulses preceding the main pulse by picoseconds may be responsible. If technological issues can be resolved, energetic proton beams could be generated for a wide range of applications such as nuclear physics, radiography, and medical science.
KW - SOLID INTERACTIONS
KW - BEAMS
KW - GENERATION
KW - ABLATION
KW - TARGETS
KW - DRIVEN
KW - IONS
U2 - 10.1063/1.4941318
DO - 10.1063/1.4941318
M3 - Journal article
VL - 119
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 5
M1 - 053302
ER -