Efficient generation of fast ions from surface modulated nanostructure targets irradiated by high intensity short-pulse lasers

Andreev, Alexander; Kumar, Naveen; Platonov, Konstantin; Pukhov, Alexander
October 2011
Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p103103
Academic Journal
It's shown that the imposition of sub-laser wavelength relief structures on the surface of mass-limited-targets results into several folds higher short-pulse laser absorption, and consequently the efficient generation of fast ions. The optimum relief parameters for enhanced short-pulse laser absorption and higher ion acceleration are estimated numerically by particle-in-cell simulations and then corroborated by analytical scalings. The stability of the pre-imposed surface modulation during the laser pulse foil interaction is also examined.


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