| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Enhancement of the Number of Fast Electrons Generated in a Laser Inverse Cone Interaction |
| JI Yan-Ling1,2, JIANG Gang1, WU Wei-Dong2, ZHANG Ji-Cheng2, TANG Yong-Jian2 |
| 1Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065 2Research Center of Laser Fusion, China Academy of Engineering Physics, PO Box 919-987, Mianyang 621900 |
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| Cite this article: |
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JI Yan-Ling, JIANG Gang, WU Wei-Dong et al 2010 Chin. Phys. Lett. 27 035201 |
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Abstract Enhancement of the energy-conversion efficiency from laser to target electrons is demonstrated by two-dimensional particle-in-cell simulations in a laser-inverse cone interaction. When an intense short-pulse laser illuminates the inverse cone target, the electrons at the cone end are accelerated by the ponderomotive force. Then these electrons are guided and confined to transport along the inverse cone walls by the induced electromagnetic fields. A device consisting of inverse hollow-cone and multihole array plasma is proposed in order to increase the energy-conversion efficiency from laser to electrons. Particle-in-cell simulations present that the multiholes transpiercing the cone end help to enhance the number of fast electrons and the maximum electron energy significantly.
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| Keywords:
52.38.Kd
52.65.Rr
52.38.Ph
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Received: 11 November 2009
Published: 09 March 2010
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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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52.38.Ph
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(X-ray, γ-ray, and particle generation)
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