Prompt electrons driving ion acceleration and formation of a two temperatures plasma in nanosecond laser-ablation domain

We present the results of an experiment on plasma generation via laser ablation at 10^12 W/cm^2 of power intensity and in a nanosecond domain. Prompt electrons emission and complex plasma plume fragmentation were simultaneously observed for the first time in this laser intensity regime, along with a...

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Bibliographic Details
Published inarXiv.org
Main Authors Mascali, D, Tudisco, S, Gambino, N, Pluchino, A, Anzalone, A, Musumeci, F, Rapisarda, A, Spitaleri, A
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 13.11.2012
Subjects
Acceleration
Dusty plasmas
Electron energy
Emission
Laser ablation
Lasers
Physics - Plasma Physics
Physics - Strongly Correlated Electrons
Plasma
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Summary:We present the results of an experiment on plasma generation via laser ablation at 10^12 W/cm^2 of power intensity and in a nanosecond domain. Prompt electrons emission and complex plasma plume fragmentation were simultaneously observed for the first time in this laser intensity regime, along with a double electron temperature inside the plasma bulk surviving for a long time to the plume expansion. 1D PIC simulations are in agreement with experimental data as long as the emission of initial prompt electrons is considered. This assumption results to be the key to explain all the other experimental evidences.
ISSN:2331-8422
DOI:10.48550/arxiv.1112.1235