NDLI: Collimated Ion Beam by a Laser-Illuminated Tailored Hole Target

Content Provider	IEEE Xplore Digital Library
Author	Kawata, S. Nakamura, M. Sonobe, R. Miyazaki, S. Onuma, N. Nodera, Y. Kikuchi, T.
Copyright Year	1973
Abstract	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 divergence. Therefore, the transverse proton-beam divergence is suppressed by the tailored hole target. First, this paper presents the robustness of the hole target against a contaminated proton-source layer. It may be also difficult to make the laser axis coincide with the target-hole center line in realistic experiments and uses when the target has only one hole. The 2.5-D particle-in-cell simulations present that a multiple-hole target is robust against the laser-alignment and the target-setting errors. The multiple-hole target may serve as a robust target for practical uses to produce a collimated proton beam. In addition, a method for a proton-energy-spectrum control is also proposed by using a hole-cover layer. The hole-cover layer serves a role of high-energy proton selection.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	363
Ending Page	369
Page Count	7
File Size	781582
File Format	PDF
ISSN	00933813
Volume Number	36
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Collimators Ion beams Clouds Robustness Particle beams Ion sources Acceleration Charge carrier processes Electrons Protons laser–plasma interaction Collimated ion beam laser proton accelerators tailored target
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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