Coulomb acceleration of light ions from homogeneous and layered targets

As applied to the problem of laser-induced ion acceleration, we have developed a theory for the expansion of a completely ionized thin two-ion-species target in the regime of a Coulomb explosion typical of the interaction of relativistically intense femtosecond laser pulses with nanofoils. Based on...

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Veröffentlicht in:Journal of experimental and theoretical physics 2012-05, Vol.114 (5), p.748-767
Hauptverfasser: Govras, E. A., Bychenkov, V. Yu, Brantov, A. V.
Format: Artikel
Sprache:eng
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Zusammenfassung:As applied to the problem of laser-induced ion acceleration, we have developed a theory for the expansion of a completely ionized thin two-ion-species target in the regime of a Coulomb explosion typical of the interaction of relativistically intense femtosecond laser pulses with nanofoils. Based on this theory and a simple numerical model, we have studied the generation of bunches of quasi-monoenergetic light ions and found their characteristics as a function of target parameters. We have performed a comparative analysis of the acceleration of light ions uniformly distributed in the target and concentrated in the form of a thin layer. For the production of high-quality accelerated ion beams, we have found optimal conditions that were qualitatively confirmed by our three-dimensional kinetic simulations of the laser pulse-thin target interaction.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776112040073