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Production of Picosecond, Kilojoule, and Petawatt Laser Pulses via Raman Amplif...
Trines, R. M. G. M.; Fiuza, F.; Bingham, R.; Fonseca, R. A.; Silva, L. O.; Cairns, R. A.; Norreys, P. A.WOS:000301051200006 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2012” ; Raman amplification in plasma has been promoted as a means of compressing picosecond optical laser pulses to femtosecond duration to explore the intensity frontier. Here we show for the first time that it can be used, with equal success, to compress laser pulses from nanosecond to picosecond duration. Simulations show up ...
The Nonlinear Saturation of the Non-resonant Kinetically Driven Streaming Insta...
Gargaté, L.; Fonseca, R. A.; Niemiec, J.; Bingham, R.; Silva, L. O.WOS:000275418000017 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2011” ; A non-resonant instability for the amplification of the interstellar magnetic field in young supernova remnant (SNR) shocks was predicted by Bell, and is thought to be relevant for the acceleration of cosmic-ray (CR) particles. For this instability, the CRs streaming ahead of SNR shock fronts drive electromagnetic waves w...
Electron trapping and acceleration on a downward density ramp: a two-stage appr...
Trines, R. M. G. M.; Bingham, R.; Najmudin, Z.; Mangles, S. P. D.; Silva, L. O.; Fonseca, R. A.; Norreys, P. A.WOS:000277355400025 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2011” ; In a recent experiment at Lawrence Berkeley National Laboratory (Geddes et al 2008 Phys. Rev. Lett. 100 215004), electron bunches with about 1 MeV mean energy and small absolute energy spread (about 0.3 MeV) were produced by plasma wave breaking on a downward density ramp. It was then speculated that such a bunch might be...
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