Encontrados 3 documentos, a visualizar página 1 de 1
Large-scale magnetic field generation via the kinetic Kelvin-Helmholtz instabil...
Alves, E.P.; Grismayer, T.; Martins, S. F.; Fiuza, F.; Fonseca, R. A.; Silva, L. O.WOS:000300611100001 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2013” ; Collisionless plasma instabilities are fundamental in magnetic field generation in astrophysical scenarios, but their role has been addressed in scenarios where velocity shear is absent. In this work we show that velocity shears must be considered when studying realistic astrophysical scenarios, since these trigger the co...
Magnetic Control of Particle Injection in Plasma Based Accelerators
Vieira, J.; Martins, S. F.; Pathak, V. B.; Fonseca, R. A.; Mori, W. B.; Silva, L.O.WOS:000291093600006 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2012” ; The use of an external transverse magnetic field to trigger and to control electron self-injection in laser- and particle-beam driven wakefield accelerators is examined analytically and through full-scale particle-in-cell simulations. A magnetic field can relax the injection threshold and can be used to control main outpu...
Modeling laser wakefield accelerator experiments with ultrafast particle-in-cel...
Martins, S. F.; Fonseca, R. A.; Vieira, J.; Silva, L. O.; Lu, W.; Mori, W. B.WOS:000278182900137 (Nº de Acesso Web of Science) ; “Prémio Científico ISCTE-IUL 2011” ; The development of new laser systems at the 10 Petawatt range will push laser wakefield accelerators to novel regimes, for which theoretical scalings predict the possibility to accelerate electron bunches up to tens of GeVs in meter-scale plasmas. Numerical simulations will play a crucial role in testing, probing, and opt...
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