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

Zhu Xing-Long; Chen Min; Yu Tong-Pu; Weng Su-Ming; He Feng; Sheng Zheng-Ming

doi:10.1063/1.5083914

Volume 4 Issue 1

Jan. 2019

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Zhu Xing-Long, Chen Min, Yu Tong-Pu, Weng Su-Ming, He Feng, Sheng Zheng-Ming. 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. doi: 10.1063/1.5083914

Citation:

Zhu Xing-Long, Chen Min, Yu Tong-Pu, Weng Su-Ming, He Feng, Sheng Zheng-Ming. 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. doi: 10.1063/1.5083914

Citation:

Zhu Xing-Long, Chen Min, Yu Tong-Pu, Weng Su-Ming, He Feng, Sheng Zheng-Ming. 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. doi: 10.1063/1.5083914

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

doi: 10.1063/1.5083914

Zhu Xing-Long^{1, 2
,},
Chen Min^{1, 2
,},
Yu Tong-Pu^3
,,
Weng Su-Ming^{1, 2},
He Feng^{1, 2},
Sheng Zheng-Ming^{1, 2, 4, 5
,
,}

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

Received Date: 2018-07-30
Accepted Date: 2018-10-28

Available Online: 2021-04-13

Publish Date: 2019-01-15

Abstract

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.

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References(50)

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