Influence of subpicosecond laser pulse duration on proton acceleration Export

@article{citeulike:4645370, abstract = {The influence of pulse duration on proton acceleration using subpicosecond (30–300 fs), ultraintense (from 3.6×1018 to 3.6×1019 W/cm2), constant energy (0.14 J) laser pulses is studied using two-dimensional simulations. The entire pulse duration is modeled so that during the rising edge of the pulse a preplasma can naturally expand from the target front and rear surfaces into vacuum, altering respectively laser absorption and electrostatic field generation. In this paper, we study this effect for two target profiles (sharp-edge profile and smooth density gradient at the front side) and we point out the existence of a weak optimum pulse duration for proton acceleration. For the different pulse durations we consider, we first show that the maximum proton energy variations are similar to those of the rear side electrostatic field amplitude. The energy variations, however, are smaller than expected from the field variations, and we explain this effect by characteristic proton acceleration time.}, author = {Carri\'{e}, M. and Lefebvre, E. and Flacco, A. and Malka, V.}, citeulike-article-id = {4645370}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PHPAEN000016000005053105000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aip.org/link/?PHP/16/053105}, citeulike-linkout-2 = {http://dx.doi.org/10.1063/1.3138742}, day = {19}, doi = {10.1063/1.3138742}, journal = {Physics of Plasmas}, keywords = {acceleration, duration, femtosecond, intensity, laser, optimum, profile, proton, pulse, target}, month = {May}, number = {5}, pages = {053105+}, posted-at = {2009-05-27 14:42:33}, priority = {4}, publisher = {AIP}, title = {Influence of subpicosecond laser pulse duration on proton acceleration}, url = {http://dx.doi.org/10.1063/1.3138742}, volume = {16}, year = {2009} }

TY - JOUR ID - citeulike:4645370 L3 - citeulike-article-id:4645370 N2 - The influence of pulse duration on proton acceleration using subpicosecond (30–300 fs), ultraintense (from 3.6×1018 to 3.6×1019 W/cm2), constant energy (0.14 J) laser pulses is studied using two-dimensional simulations. The entire pulse duration is modeled so that during the rising edge of the pulse a preplasma can naturally expand from the target front and rear surfaces into vacuum, altering respectively laser absorption and electrostatic field generation. In this paper, we study this effect for two target profiles (sharp-edge profile and smooth density gradient at the front side) and we point out the existence of a weak optimum pulse duration for proton acceleration. For the different pulse durations we consider, we first show that the maximum proton energy variations are similar to those of the rear side electrostatic field amplitude. The energy variations, however, are smaller than expected from the field variations, and we explain this effect by characteristic proton acceleration time. IS - 5 JF - Physics of Plasmas TI - Influence of subpicosecond laser pulse duration on proton acceleration PB - AIP VL - 16 SP - 053105 KW - acceleration KW - duration KW - femtosecond KW - intensity KW - laser KW - optimum KW - profile KW - proton KW - pulse KW - target AU - Carrié, M AU - Lefebvre, E AU - Flacco, A AU - Malka, V PY - 2009/05/19/ UR - http://dx.doi.org/10.1063/1.3138742 ER -