Spatial evolution of a q-Gaussian laser beam in relativistic plasma
Data(s) |
01/09/2010
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Resumo |
In a recent experimental study, the beam intensity profile of the Vulcan petawatt laser beam was measured; it was found that only 20% of the energy was contained within the full width at half maximum of 6.9 mu m and 50% within 16 mu m, suggesting a long-tailed non-Gaussian transverse beam profile. A q-Gaussian distribution function was suggested therein to reproduce this behavior. The spatial beam profile dynamics of a q-Gaussian laser beam propagating in relativistic plasma is investigated in this article. A non-paraxial theory is employed, taking into account nonlinearity via the relativistic decrease of the plasma frequency. We have studied analytically and numerically the dynamics of a relativistically guided beam and its dependence on the q-parameter. Numerical simulation results are shown to trace the dependence of the focusing length on the q-Gaussian profile. |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Sharma , A & Kourakis , Y 2010 , ' Spatial evolution of a q-Gaussian laser beam in relativistic plasma ' Laser And Particle Beams , vol 28 , no. 3 , pp. 479-489 . DOI: 10.1017/S0263034610000479 |
Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/3100/3104 #Condensed Matter Physics #/dk/atira/pure/subjectarea/asjc/3100/3107 #Atomic and Molecular Physics, and Optics #/dk/atira/pure/subjectarea/asjc/2200/2208 #Electrical and Electronic Engineering |
Tipo |
article |