| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Effects of Laser Parameters on Fast Electron Generation in a Multihole Array Target |
| JI Yan-Ling1,2, DUAN Tao2, JIANG Gang3, WU Wei-Dong1, TANG Yong-Jian1**
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1Research Center of Laser Fusion, China Academy of Engineering Physics, PO Box 919-987, Mianyang 621900
2Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010
3Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065
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| Cite this article: |
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JI Yan-Ling, DUAN Tao, JIANG Gang et al 2011 Chin. Phys. Lett. 28 035201 |
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Abstract The effects of laser parameters on the production of fast electrons from laser-multihole array target interaction are investigated theoretically via two-dimensional particle-in-cell simulations. The results show that the fast electron temperature is scaled by I1/2λ2 with I and λ being the laser intensity and wavelength. When the laser intensity reaches 2.14×1020 W⋅cm−2, a typical bi-Maxwellian energy distribution is observed. The slope temperature of the low-energy component fits the linear scaling Th∼I1/2 well. The high-energy component has an increased slope temperature comparable to ponderomotive potential scaling law. In addition, the electron temperature rises linearly with the pulse duration, Th∼Δt. The divergence angle of the fast electrons increases with laser intensity and pulse duration, but is independent of laser wavelength.
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| Keywords:
52.38.Kd
52.65.Rr
52.38.Ph
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Received: 20 November 2010
Published: 28 February 2011
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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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[1] Atzeni S et al 2004 The Physics of Inertial Fusion-Beam Plasma Interaction, Hydrodynamics, Hot Dense Matter (Oxford: Oxford Science Publications) p 410
[2] Zhang J T 2001 Chin. Phys. Lett. 18 799
[3] Key M H 2007 Phys. Plasmas 14 055502
[4] Nishikawa T et al 2004 Appl. Phys. B 78 885
[5] Nishikawa T et al 2001 Appl. Phys. B 73 185
[6] Nishikawa T et al 2004 J. Appl. Phys. 96 7537
[7] Nodera Y et al 2008 Phys. Rev. E 78 046401
[8] Guan F 2008 Synthesis of Aligned Carbon Nanotubes for Laser Target in ICF (Mianyang: Southwest University of Science and Technology) chap 5 p 59 (in Chinese)
[9] Ji Y L et al 2010 Appl. Phys. Lett. 96 041504
[10] Ji Y L et al 2010 Chin. Phys. Lett. 27 035201
[11] Cao L H et al 2010 Phys. Plasmas 17 043103
[12] Jin Z Y et al 2009 Chin. Phys. Lett. 26 125204
[13] Li Y T et al 2006 Phys. Rev. Lett. 96 165003
[14] Nakamura T 2007 Phys. Plasmas 14 053112
[15] Chrisman B et al 2008 Phys. Plasmas 15 056309
[16] Green J S et al 2008 Phys. Rev. Lett. 100 015003
[17] Wilks S C et al 1997 IEEE J. Quantum Electron. 33 1954
[18] Susumu K et al 2002 J. Plasmas Fusion Res. 78 717
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