Nanostructures and enhanced absorption in intense laser interaction with matter: effect of laser prepulses

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dc.creatorRajeev, P. P.
dc.creatorKahaly, S.
dc.creatorBose, S.
dc.creatorKiran, P. Prem
dc.creatorTaneja, P.
dc.creatorAyyub, P.
dc.creatorKumar, G. Ravindra
dc.date2005-06-03
dc.date.accessioned2026-07-07T05:54:59Z
dc.date.available2026-07-07T05:54:59Z
dc.descriptionHard x-ray emission (20 - 200 keV) from plasmas produced by intense laser pulses on nanoparticle coated targets is compared with that from optically polished targets. The yield enhancement offered by nanoparticles is studied under different prepulse conditions. It is observed that the enhancement reduces when the nanoparticle coated target is irradiated with a prepulse with intensity greater than 10^13 W/cm^2. When the prepulse intensity exceeds 10^14 W/cm^2, the enhancement vanishes completely. This is attributed to preplasma formation on nanoparticles their subsequent structural modifcation before the arrival of the main pulse. It is suggested that high-contrast ultrashort pulses are essential for nanoparticles to function as yield enhancers.
dc.description5 pages, 4 figures, submitted to Phys. Rev. A (rapid comm.)
dc.identifierhttps://arxiv.org/abs/physics/0506031
dc.identifierhttp://arxiv.org/abs/physics/0506031
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/87161
dc.subjectPlasma Physics
dc.subjectOptics
dc.titleNanostructures and enhanced absorption in intense laser interaction with matter: effect of laser prepulses
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