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Features in the ion emission of Cu, Al, and C plasmas produced by ultrafast laser ablation

Kelly, T. J.; Butler, T.; Walsh, N.; Hayden, P.; Costello, J. T.


T. J. Kelly

T. Butler

N. Walsh

P. Hayden

J. T. Costello


© 2015 AIP Publishing LLC. The bi-modal nature of charge integrated ion kinetic energy distributions, which result from ultrafast laser produced plasmas, is discussed in this paper. A negatively biased Faraday cup was used as a charge collector to measure ion distributions from three different solid targets that had been irradiated with an ultrafast laser in the fluence range 0.1-1 J/cm2. A bi-modal time of flight distribution is found for all three targets (C, Al, and Cu). In the case of the metallic targets (Al and Cu), high- and low-kinetic energy peaks exhibit quite different dependencies on laser fluence, whereas for the semi-metallic target (C), both peaks scale similarly with ultrafast laser fluence. The results are discussed within the framework of a one dimensional capacitor model resulting in ion acceleration.

Journal Article Type Article
Publication Date 2015-12
Journal Physics of plasmas
Print ISSN 1070-664X
Electronic ISSN 1089-7674
Publisher AIP Publishing
Peer Reviewed Peer Reviewed
Volume 22
Issue 12
Article Number 123112
Pages 123112-1-123312-7
Keywords Lasers
Publisher URL
Additional Information Copy of article first published in Physics of plasmas, 2015, v.22, issue 12.


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