An exptl. campaign aiming to study the effects of innovative nanostructured targets based on Ag nanowires on laser energy absorption in the ns time domain was carried out at the Laser Energy for Nuclear Science lab. of INFN-LNS in Catania. The tested targets were realized at INFN-Bologna by anodizing Al sheets to obtain layers of porous Al2O3 of different thicknesses, on which nanowires of various metals are grown by electrodeposition with different heights. Targets were then irradiated by using a Nd:YAG laser at different pumping energies. Advanced diagnostic tools were used for characterizing the plasma plume and ion prodn. As compared with targets of pure Al, a huge enhancement (of almost 2 order of magnitude) of the x-ray flux emitted by the plasma was obsd. when using the nanostructured targets, with a corresponding decrease of the optical range signal, pointing out that the energetic content of the laser produced plasma was remarkably increased. This anal. was also confirmed from time-of-flight spectra.
|Titolo:||Effect of advanced nanowire-based targets in nanosecond laser-matter interaction (invited)|
|Data di pubblicazione:||2016|
|Appare nelle tipologie:||1.1 Articolo in rivista|