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Study on the hydrodynamical behavior of thin foils irradiated by near-field ISI smoothed beams

Published online by Cambridge University Press:  16 October 2009

C. Strangio  and
A. Caruso
C. Strangio
Affiliation:
Associazione EURATOM-ENEA sulla Fusione, C. R. E. Frascati, C. P. 65-00044 Frascati, Roma, Italia
A. Caruso
Affiliation:
Associazione EURATOM-ENEA sulla Fusione, C. R. E. Frascati, C. P. 65-00044 Frascati, Roma, Italia
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Abstract

The evolution of thin foils accelerated over distances much greater than their in-flight thickness has been studied for a classical, low power density regime (5 × 1012 and 2 × 1013 W/cm2 at λ = 1.054 μm, 0.15 THz bandwidth). Two illumination modes have been used, one of these being based on a near-field, multi-lens array ISI smoothing, the other on focusing by F/1 aspherical lenses. The results seem to be encouraging with regard to the possibility of getting smooth, spatially uniform acceleration over distances of the order of 100 × IFFT (In-Flight-Foil Thickness). The experiments with nonsmoothed beams have shown a sort of refractive interchange stabilization for the initial on-target imprinting of the illumination non-uniformities.

Type
Research Article
Information
Laser and Particle Beams , Volume 16 , Issue 1: Special Issue: 24th ECLIM , March 1998 , pp. 45 - 60
Copyright
Copyright © Cambridge University Press 1998

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References

Born, M. & Wolf, E. 1965 Principles of Optics (Pergamon Press), p. 121.Google Scholar