High-energy density physics experiments with intense heavy ion beams

F.M. Bieniosek, E. Henestroza, M. Leitner, B.G. Logan, R.M. More, P.K. Roy, P. Ni, P.A. Seidl,W.L. Waldron, J.J. Barnard

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment(2009)

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摘要
The US heavy ion fusion science program has developed techniques for heating ion-beam-driven warm dense matter (WDM) targets. The WDM conditions are to be achieved by combined longitudinal and transverse space-charge neutralized drift compression of the ion beam to provide a hot spot on the target with a beam spot size of about 1mm, and pulse length about 1–2ns. As a technique for heating volumetric samples of matter to high-energy density, intense beams of heavy ions are capable of delivering precise and uniform beam energy deposition dE/dx, in a relatively large sample size, and the ability to heat any solid-phase target material. Initial experiments use a 0.3MeV K+ beam (below the Bragg peak) from the NDCX-I accelerator. Future plans include target experiments using the NDCX-II accelerator, which is designed to heat targets at the Bragg peak using a 3–6MeV lithium ion beam. The range of the beams in solid matter targets is about 1μm, which can be lengthened by using porous targets at reduced density.
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关键词
Inertial fusion energy,Ion beam,Diagnostics,Warm dense matter,High energy density physics
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