Positron generation via two sequent laser pulses irradiating a solid aluminum target

Liu, Jianxun; Gan, Long-Fei; Ma, Yunlong; Jing, Zhao; Yang, X. H.; Yu, Tong-Pu; Zhuo, H. B.; Shao, F. Q.

doi:10.1063/1.5000065

Cited by 7 publications

(2 citation statements)

References 37 publications

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“…» ´cm −3 is the critical density according to the incident laser. Thus the near-criticaldensity plasmas around the axis can increase the laser energy conversion efficiency [20], and the high-density plasmas outside can induce the laser self-focusing. A circularly polarized Gaussian laser pulse with a spot radius of 2λ 0 is incident from the center of the left boundary, and propagates along the x axial direction.…”

Section: Positron Generationmentioning

confidence: 99%

Tens GeV positron generation and acceleration in a compact plasma channel

Liu

Cao

et al. 2019

Plasma Phys. Control. Fusion

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We propose a compact scheme for high-density and high-energy positron generation. In the scheme, the generation, compression and acceleration of positrons are encompassed in a plasma channel irradiated by an ultra intense laser. In about 20 μm, positrons are accelerated with their energy beyond 20 GeV, and are compressed with a maximal density of 4.1n c . The obtained positron beam with a wave-like density profile is accelerated via the direct laser acceleration.

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Section: Positron Generationmentioning

confidence: 99%

Tens GeV positron generation and acceleration in a compact plasma channel

Liu

Cao

et al. 2019

Plasma Phys. Control. Fusion

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“…To exploit the transformative potential of laser-driven sources and to open up experimental investigation of ultraintense (>10 22 Wcm −2 ) laser-plasma phenomena, such as high field physics [7,8], characteristic parameters of the drive laser must be improved beyond the present state-of-the-art; specifically, the peak intensity and pulse intensity contrast. An approach commonly employed involves increasing the laser pulse power, either through increasing the energy or decreasing…”

Section: Introductionmentioning

confidence: 99%

Development of Focusing Plasma Mirrors for Ultraintense Laser-Driven Particle and Radiation Sources

Wilson

King

Gray

et al. 2018

QuBS

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Increasing the peak intensity to which high power laser pulses are focused can open up new regimes of laser-plasma interactions, resulting in the acceleration of ions to higher energies and more efficient generation of energetic photons. Low f-number focusing plasma mirrors, which re-image and demagnify the laser focus, provide an attractive approach to producing higher intensities, without requiring significant changes to the laser system. They are small, enhance the pulse intensity contrast and eliminate the requirement to expose expensive optics directly to target debris. We report on progress made in a programme of work to design, manufacture and optimise ellipsoidal focusing plasma mirrors. Different approaches to manufacturing these innovative optics are described, and the results of characterisation tests are presented. The procedure developed to align the optics is outlined, together with initial results from their use with a petawatt-level laser.

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Bright X/$$\gamma$$-ray emission and lepton pair production by strong laser fields: a review

Yu,

Liu,

Zhao

et al. 2024

Rev. Mod. Plasma Phys.

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The advent of high-power ultra-short laser pulses opens up new frontiers of relativistic non-linear optics, high energy density physics and laboratory astrophysics. As the laser electric field in the particle rest frame approaches the Schwinger field $$E_{cr} = 1.3 \times 10^{18}\,\textrm{V} \textrm{m}^{-1}$$ E cr = 1.3 × 10 18 V m - 1 , the laser interaction with matter enters into the quantum electrodynamics (QED) dominated regime, where extremely rich non-linear phenomena take place, such as a violent acceleration of charged particles, copious lepton pair production, and ultra-brilliant X/$$\gamma$$ γ -ray emission. Among them, X/$$\gamma$$ γ -ray emission based on the laser-plasma is generally characterized by large photon flux, high brilliance, small source size, and high photon energy, which can even annihilate into lepton pairs by colliding with photons. Though various schemes have been proposed for bright high-energy photon emission and lepton generation and acceleration, many predictions remain to be confirmed and thoroughly tested in experiments. In this review, we introduce recent advances in bright X/$$\gamma$$ γ -ray radiation and lepton pair generation in the QED regime by the interaction of relativistic intense lasers with various plasma targets. The characteristics of the radiation and secondary particles generated via these schemes are summarized, and the experimental progresses are elaborated.

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Positron generation via two sequent laser pulses irradiating a solid aluminum target

Cited by 7 publications

References 37 publications

Tens GeV positron generation and acceleration in a compact plasma channel

Tens GeV positron generation and acceleration in a compact plasma channel

Development of Focusing Plasma Mirrors for Ultraintense Laser-Driven Particle and Radiation Sources

Bright X/$$\gamma$$-ray emission and lepton pair production by strong laser fields: a review

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