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Proceedings Paper

Prompt electron emission characterization in UV laser ablation of metallic targets
Author(s): Salvatore Amoruso; Mario Armenante; Riccardo Bruzzese; Raffaele Velotta; Nicola Spinelli; X. Wang
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Paper Abstract

We report on prompt emission of fast electrons occurring during nanosecond excimer laser ablation of metallic targets in vacuum. Prompt electrons yield and most probable kinetic energy as a function of the laser pulse fluence have been obtained by charge collection and time of flight techniques. The experimental data show a strong dependence of the prompt electrons yield on laser fluence. In particular, the data follow a power law dependence with two distinct slopes, below and above approximately equals 5 Jcm-2. Also the ion yield shows a similar behavior. The observed roll-off in the electron and ion dependence on the laser fluence has been discussed in terms of laser fluence has been discussed in terms of laser plasma shielding effects.

Paper Details

Date Published: 25 February 2000
PDF: 6 pages
Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); doi: 10.1117/12.378163
Show Author Affiliations
Salvatore Amoruso, INFM and Univ. degli Studi della Basilicata (Italy)
Mario Armenante, INFM (Italy) and INFN (Italy)
Riccardo Bruzzese, INFM (Italy) and Univ. degli Studi di Napoli Federico II (Italy)
Raffaele Velotta, INFM (Italy) and Univ. degli Studi di Napoli Federico II (Italy)
Nicola Spinelli, INFM (Italy) and Univ. degli Studi di Napoli Federico II (Italy)
X. Wang, INFM (Italy) and Univ. degli Studi di Napoli Federico II (Italy)


Published in SPIE Proceedings Vol. 4070:
ALT '99 International Conference on Advanced Laser Technologies
Vladimir I. Pustovoy; Vitali I. Konov, Editor(s)

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