Simulation of the Quasi-Monoenergetic Protons Generation by Parallel Laser Pulses Interaction with Foils

A new scheme of radiation pressure acceleration for generating high-quality protons by using two overlappingparallel laser pulses is proposed. Particle-in-cell simulation shows that the overlapping of two pulses with identical Caussian profiles in space and trapezoidal profiles in the time domain ca...

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Bibliographic Details
Published in:Chinese physics letters 2014-11, Vol.31 (11), p.103-106
Main Author: 王伟权 银燕 邹德滨 余同普 徐涵 郁明阳 马燕云
Format: Article
Language:English
Subjects:
Acceleration
Foils
Gaussian
Lasers
Nucleons
Particle in cell technique
Proton beams
Simulation
光脉冲产生
峰值能量
平行
模拟
激光脉冲
相互作用
质子束
辐射压力
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Summary:A new scheme of radiation pressure acceleration for generating high-quality protons by using two overlappingparallel laser pulses is proposed. Particle-in-cell simulation shows that the overlapping of two pulses with identical Caussian profiles in space and trapezoidal profiles in the time domain can result in a composite light pulse with a spatial profile suitable for stable acceleration of protons to high energies. At～2.46 × 10^21 W/cm^2 intensity of the combination light pulse, a quasi-monoenergetic proton beam with peak energy ,～200 MeV/nucleon, energy spread 〈15%, and divergency angle 〈4° is obtained, which is appropriate for tumor therapy. The proton beam quality can be controlled by adjusting the incidence points of two laser pulses.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/11/115201