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Divergence suppression of laser-produced proton beam is demonstrated by a tailored thin-foil target with hole. When an intense short-pulse laser illuminates the thin-foil target with the hole, transverse-edge effects of an accelerated electron cloud and an ion source cloud are eliminated by a protuberant part of the hole. The edge fields of the electron cloud and the ion source cloud induce the proton-beam...
Suppression of transverse proton beam divergence is demonstrated by a tailored thin foil target with a hole at the opposite side of laser illumination. When an intense short pulse laser illuminates the thin foil target with the hole, transverse edge effects of an accelerated electron cloud and an ion cloud are eliminated by a protuberant part of the hole: the edge effects of the electron cloud and...
We study an intense-heavy-ion-beam transport through an insulator beam guide by a particle simulation in heavy ion inertial confinement fusion. we have proposed a new system for an electron and proton beam transport using an insulator beam guide. We apply this system to a Cs+ beam transport and a Pb+ beam transport. An intense heavy ion beam creates a local electric field on the insulator inner surface,...
In this paper we present a new interesting physics in an intense-electron-beam transport control using an insulator collimator: the ion extraction from a plasma generated at the insulator surface is self-regulated by the net space charge of the electron beam in order for the effective charge neutralization. A part of beam electrons hits the insulator surface, and the electron charge accumulated at...
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