Main > Matter and Radiation at Extremes >  Volume 4 >  Issue 1 >  Page 014401 > Article
  • Abstract
  • Abstract
  • Figures (5)
  • Tables (0)
  • Equations (0)
  • References (50)
  • Get PDF
  • View Full Text
  • Paper Information
  • Received: Jul. 30, 2018

    Accepted: Oct. 28, 2018

    Posted: Dec. 31, 2019

    Published Online: Mar. 25, 2019

    The Author Email: Sheng Zheng-Ming (zmsheng@sjtu.edu.cn)

    DOI: 10.1063/1.5083914

  • Get Citation
  • Copy Citation Text

    Xing-Long Zhu, Min Chen, Tong-Pu Yu, Su-Ming Weng, Feng He, Zheng-Ming Sheng. Collimated GeV attosecond electron–positron bunches from a plasma channel driven by 10 PW lasers[J]. Matter and Radiation at Extremes, 2019, 4(1): 014401

    Download Citation

  • Category
  • Fundamental Physics at Extremes
  • Share
Matter and Radiation at Extremes, Vol. 4, Issue 1, 014401 (2019)

Collimated GeV attosecond electron–positron bunches from a plasma channel driven by 10 PW lasers

Xing-Long Zhu1,2, Min Chen1,2, Tong-Pu Yu3, Su-Ming Weng1,2, Feng He1,2, and Zheng-Ming Sheng1,2,4,5,a)

Author Affiliations

  • 1Key Laboratory for Laser Plasmas (MoE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China
  • 3Department of Physics, National University of Defense Technology, Changsha 410073, China
  • 4SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, UK
  • 5Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China

Abstract

High-energy positrons and bright γ-ray sources are of great importance both in fundamental research and for practical applications. However, collimated GeV electron–positron pair jets and γ-ray flashes are still rarely produced in the laboratory. Here, we demonstrate that by irradiating a near-critical-density plasma channel with two 10 PW-scale laser pulses, highly directional GeV electron–positron pairs and bright γ-ray beams can be efficiently generated. Three-dimensional particle-in-cell simulations show the formation of GeV positron jets with high density (8×1021/ cm3), attosecond duration (400 as), and a divergence angle of 14°. Additionally, ultrabright [2×1025 photons s?1 mm?2 mrad?2 (0.1% bandwidth)?1] collimated attosecond (370 as) γ-ray flashes with a laser energy conversion efficiency of 5.6% are emitted. These features show the significant advantage of using a plasma channel as compared with a uniform plasma and thus open up new possibilities for a wide variety of applications.

Please Enter Your Email: