Two-stage γ ray emission via ultrahigh intensity laser pulse interaction with a laser wakefield accelerated electron beam

Mamat Ali BAKE; Aynisa TURSUN; Aimierding AIMIDULA; Baisong XIE (谢柏松)

doi:10.1088/2058-6272/ab988a

Plasma Science and Technology > 2020 > 22(10): 105201. > DOI: 10.1088/2058-6272/ab988a

Mamat Ali BAKE, Aynisa TURSUN, Aimierding AIMIDULA, Baisong XIE (谢柏松). Two-stage γ ray emission via ultrahigh intensity laser pulse interaction with a laser wakefield accelerated electron beam[J]. Plasma Science and Technology, 2020, 22(10): 105201. DOI: 10.1088/2058-6272/ab988a

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Two-stage γ ray emission via ultrahigh intensity laser pulse interaction with a laser wakefield accelerated electron beam

¹ School of Physics Science and Technology, Xinjiang University, Urumqi 830046, People's Republic of China
²Center for Theocratical Physics, Xinjiang University, Urumqi 830046, People's Republic of China
³ Key Laboratory of Beam Technology of the Ministry of Education, and College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, People's Republic of China

Funds: The authors would like to thank Dr N Abdukerim for her insightful discussions. This work was financially supported by National Natural Science Foundation of China (Nos. 11664039, 11575150, 11964038 and 11875007). The authors are particularly grateful to CFSA at the University of Warwick for allowing us to use the EPOCH code (developed under UK EPSRC (Grant Nos. EP/G054940/1, EP/ G055165/1 and EP/G056803/1)).

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Received Date: February 24, 2020
Revised Date: May 28, 2020
Accepted Date: May 31, 2020

Graphical Abstract

Abstract

Abstract

In this study, we investigate the generation of twin γ ray beams in the collision of an ultrahigh intensity laser pulse with a laser wakefield accelerated electron beam using a particle-in-cell simulation. We consider the composed target of a homogeneous underdense preplasma in front of an ultrathin solid foil. The electrons in the preplasma are trapped and accelerated by the wakefield. When the laser pulse is reflected by the thin solid foil, the wakefield accelerated electrons continue to move forward and pass through the foil almost without influence from the reflected laser pulse or foil. Consequently, two groups of γ ray flashes, with tunable time delay and energy, are generated by the wakefield accelerated electron beam interacting with the reflected laser pulse from the foil as well as another counter-propagating petawatt laser pulse behind the foil. Additionally, we study the dependence of the γ photon emission on the preplasma densities, driving laser polarization, and solid foil.
- laser plasma interaction,
- wakefield acceleration,
- γ ray emission,
- particle-in-cell (PIC)simulation

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References (35)

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