Control of target-normal-sheath-accelerated protons from a guiding cone

Journal Article · Mon Jun 15 00:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4922053· OSTI ID:22410447

Zou, D. B. ^[1]; Yang, X. H.; Yu, T. P.; Shao, F. Q. ^[1]; Pukhov, A. ^[2]

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1. College of Science, National University of Defense Technology, Changsha 410073 (China)
2. Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, Düsseldorf 40225 (Germany)

It is demonstrated through particle-in-cell simulations that target-normal-sheath-accelerated protons can be well controlled by using a guiding cone. Compared to a conventional planar target, both the collimation and number density of proton beams are substantially improved, giving a high-quality proton beam which maintained for a longer distance without degradation. The effect is attributed to the radial electric field resulting from the charge due to the hot target electrons propagating along the cone surface. This electric field can effectively suppress the spatial spread of the protons after the expansion of the hot electrons.

• OSTI ID: 22410447
• Journal Information: Physics of Plasmas, Vol. 22, Issue 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
COMPUTERIZED SIMULATION
CONES
CONTROL
ELECTRIC FIELDS
ELECTRONS
PLASMA SHEATH
PROTON BEAMS
TARGETS