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Author Yu, Tong-Pu ♦ Pukhov, Alexander ♦ Shvets, Gennady ♦ Chen, Min
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PARTICLE ACCELERATORS ♦ PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ ACCELERATION ♦ BEAM BUNCHING ♦ BEAM PRODUCTION ♦ BEAM-PLASMA SYSTEMS ♦ CARBON IONS ♦ COMPUTERIZED SIMULATION ♦ FOILS ♦ HEAVY IONS ♦ INTERFACES ♦ ION BEAMS ♦ LASER RADIATION ♦ LASER-PRODUCED PLASMA ♦ LAYERS ♦ LIGHT IONS ♦ PLASMA SIMULATION ♦ PROTON BEAMS ♦ RAYLEIGH-TAYLOR INSTABILITY ♦ BEAM DYNAMICS ♦ BEAMS ♦ CHARGED PARTICLES ♦ DYNAMICS ♦ ELECTROMAGNETIC RADIATION ♦ INSTABILITY ♦ IONS ♦ MECHANICS ♦ NUCLEON BEAMS ♦ PARTICLE BEAMS ♦ PLASMA ♦ RADIATIONS ♦ SIMULATION
Abstract By using multidimensional particle-in-cell simulations, we present a new regime of stable proton beam acceleration which takes place when a two-ion-species shaped foil is illuminated by a circularly polarized laser pulse. In the simulations, the lighter protons are nearly instantaneously separated from the heavier carbon ions due to the charge-to-mass ratio difference. The heavy ion layer expands in space and acts to buffer the proton layer from the Rayleigh-Taylor-like (RT) instability that would have otherwise degraded the proton beam acceleration. A simple three-interface model is formulated to explain qualitatively the stable acceleration of the light ions. In the absence of the RT instability, the high quality monoenergetic proton bunch persists even after the laser-foil interaction ends.
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-08-06
Publisher Place United States
Journal Physical Review Letters
Volume Number 105
Issue Number 6


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