| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Simulation of the Quasi-Monoenergetic Protons Generation by Parallel Laser Pulses Interaction with Foils |
| WANG Wei-Quan1, YIN Yan1**, ZOU De-Bin1, YU Tong-Pu1, YANG Xiao-Hu1, XU Han2, YU Ming-Yang3, MA Yan-Yun1, ZHUO Hong-Bin1, SHAO Fu-Qiu1 |
1College of Science, National University of Defense Technology, Changsha 410073
2College of Computer Science, National University of Defense Technology, Changsha 410073
3Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027
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| Cite this article: |
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WANG Wei-Quan, YIN Yan, ZOU De-Bin et al 2014 Chin. Phys. Lett. 31 115201 |
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Abstract A new scheme of radiation pressure acceleration for generating high-quality protons by using two overlapping-parallel laser pulses is proposed. Particle-in-cell simulation shows that the overlapping of two pulses with identical Gaussian 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 ～2.46×1021 W/cm2 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.
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Published: 28 November 2014
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| PACS: |
52.38.Kd
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(Laser-plasma acceleration of electrons and ions)
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52.65.Rr
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(Particle-in-cell method)
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42.62.Be
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(Biological and medical applications)
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