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Spectrally Resolved Imaging of Ultrashort Laser Produced Plasma

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5 Author(s)
Anoop, K.K. ; Dipartimento di Fisica and CNR-SPIN, Università degli Studi di Napoli Federico II, Complesso Universitario Monte S. Angelo, Napoli 80126, Italy. ; Ni, X. ; Wang, X. ; Bruzzese, R.
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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.

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Plasma Science, IEEE Transactions on  (Volume:PP ,  Issue: 99 )

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