A spectrally resolved imaging technique is introduced to investigate the spatial and temporal evolution of different plasma plume components [ions, atoms and nanoparticles (NPs)] produced during ultrashort laser ablation of a pure copper target. The temporal evolution of neutral (Cu*) and ionic (Cu+) components of the atomic plasma are separately imaged by exploiting bandpass interference filters in front of a fast-gated intensified charge coupled device camera, whereas for the NPs plume, its broadband emission is imaged. The 2-D spectrally resolved images show a dominant neutral component in the atomic plasma plume emission and a faster, well-separated ionic component moving ahead of it. The more massive, slow NPs plume follows at much longer delay.
Spectrally Resolved Imaging of Ultrashort Laser Produced Plasma / Kilyanamkandy, Anoop; Xiaochang, Ni; Xuan, Wang; Bruzzese, Riccardo; Amoruso, Salvatore. - In: IEEE TRANSACTIONS ON PLASMA SCIENCE. - ISSN 0093-3813. - 42:(2014), pp. 2698-2699. [10.1109/TPS.2014.2302853]
Spectrally Resolved Imaging of Ultrashort Laser Produced Plasma
KILYANAMKANDY, ANOOP;BRUZZESE, RICCARDO;AMORUSO, SALVATORE
2014
Abstract
A spectrally resolved imaging technique is introduced to investigate the spatial and temporal evolution of different plasma plume components [ions, atoms and nanoparticles (NPs)] produced during ultrashort laser ablation of a pure copper target. The temporal evolution of neutral (Cu*) and ionic (Cu+) components of the atomic plasma are separately imaged by exploiting bandpass interference filters in front of a fast-gated intensified charge coupled device camera, whereas for the NPs plume, its broadband emission is imaged. The 2-D spectrally resolved images show a dominant neutral component in the atomic plasma plume emission and a faster, well-separated ionic component moving ahead of it. The more massive, slow NPs plume follows at much longer delay.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
