| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Quasi-Monoenergetic Electron Beam Generation from Nanothickness Solid Foils Irradiated by Circular-Polarization Laser Pulses |
| SU Heng-Yi1, HUANG Yong-Sheng1**, WANG Nai-Yan1, TANG Xiu-Zhang1, LU Wei2 |
1High Power Excimer Laser Laboratory, China Institute of Atomic Energy, Beijing 102413
2Department of Engineering Physics, Tsinghua University, Beijing 100084
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| Cite this article: |
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SU Heng-Yi, HUANG Yong-Sheng, WANG Nai-Yan et al 2014 Chin. Phys. Lett. 31 075202 |
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Abstract Ultrashort 1022–1024 W/cm2 laser pulses will offer the possibility of producing monoenergetic electron beams in the GeV–TeV level in the future. A laser-electron acceleration scheme is proposed by the interaction between a thin solid foil and an ultra-intense laser pulse for a0≥800σ0, where a0 is the normalized laser field and σ0 is the normalized plasma surface density. The energy of the electrons as a function of time can be described by a simple model which indicates that an exponential relationship exists between the energy and the normalized time τ. A quasi-monoenergetic high density electron beam with 1.3 GeV energy and a 2.2% energy spread has been predicted for a0=223.5 by particle-in-cell simulations. Characteristics of the ultra-high density electron layer formed in the early period of the acceleration are discussed.
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Published: 30 June 2014
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| PACS: |
52.38.Kd
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(Laser-plasma acceleration of electrons and ions)
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41.75.Jv
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(Laser-driven acceleration?)
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52.65.Rr
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(Particle-in-cell method)
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52.35.Py
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(Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))
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Abstract
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