Title :
Generation of High-Current Proton Beams With a Low Energy Spread by Phase-Stable Acceleration (PSA)
Author :
Liu, B.C. ; He, Z.H. ; Yan, X.Q. ; Sheng, Z.M. ; Guo, Z.Y. ; Lu, Y.R. ; Chen, J.E.
Author_Institution :
State Key Lab. of Nucl. Phys. & Technol., Peking Univ., Beijing
Abstract :
The acceleration of protons in the interaction of a circularly polarized laser pulse with a thin foil is investigated. For circular-polarization laser pulses, the quasi-equilibrium for electrons is established due to the light pressure and the electrostatic field built up at the interacting front of the laser pulse. The protons located within the skin depth of the laser pulse can be synchronously accelerated and bunched like phase-stable acceleration in a conventional radio-frequency accelerator, so that a high-current proton beam with a low energy spread is generated. It has been proved by 1-D particle-in-cell simulations.
Keywords :
accelerator RF systems; linear accelerators; plasma accelerators; plasma production by laser; plasma simulation; proton accelerators; proton beams; PSA; circularly polarized laser pulse; conventional radio-frequency accelerator; electrostatic field; high-current proton beams generation; laser-plasma interaction; linac; particle-in-cell simulations; phase-stable acceleration; protons acceleration; Acceleration; Electrons; Electrostatics; Optical polarization; Optical pulse generation; Optical pulses; Particle beams; Protons; Radio frequency; Skin; Circularly polarized (CP) laser; particle-in-cell (PIC); phase stable; radio-frequency accelerator;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.927161
