Proton angular distribution research by a new angle-resolved proton energy spectrometer

Su, L. N.; Zheng, Yu; Li, Meng; Hu, Zhi; Wang, Weimin; Yuan, Xiaohui; Xu, Ming; Sheng, Zheng-Ming; Shen, Zebang; Fan, Hongwei; Li, Yutong; Ma, Jing; Lu, Xin; Chen, Liming; Wang, Zhaohua; Wei, Zhiyi; Zhang, Jie

doi:10.1007/s11433-014-5419-z

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…One can see obvious evidence of the reflection between significant acceleration or deceleration marked by the grey circles, which indicate that some ions experience sequential acceleration occurs at different locations. This is different from the usual acceleration mechanisms of ions found in relativistic laser-solid interaction in laboratory [28].…”

Section: First Stage: Stochastic Accelerationcontrasting

confidence: 80%

Two-stage acceleration of interstellar ions driven by high-energy lepton plasma flows

Cui

Sheng

et al. 2015

Sci. China Phys. Mech. Astron.

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We present the particle-in-cell (PIC) simulation results of the interaction of a high-energy lepton plasma flow with background electron-proton plasma and focus on the acceleration processes of the protons. It is found that the acceleration follows a two-stage process. In the first stage, protons are significantly accelerated transversely (perpendicular to the lepton flow) by the turbulent magnetic field "islands" generated via the strong Weibel-type instabilities. The accelerated protons shows a perfect inverse-power energy spectrum. As the interaction continues, a shockwave structure forms and the protons in front of the shockwave are reflected at twice of the shock speed, resulting in a quasi-monoenergetic peak located near 200MeV under the simulation parameters. The presented scenario of ion acceleration may be relevant to cosmic-ray generation in some astrophysical environments.

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Section: First Stage: Stochastic Accelerationcontrasting

confidence: 80%

Two-stage acceleration of interstellar ions driven by high-energy lepton plasma flows

Cui

Sheng

et al. 2015

Sci. China Phys. Mech. Astron.

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“…[24] Such sub-wavelength grating-surface targets can be used to increase the conversion efficiency in laser-driven plasmabased proton acceleration due to the extremely high absorption coefficient of the incident laser energy. Proton accelerations due to the laser-solid target interaction have attracted a lot of interest, [3,77,78] not only because such a novel acceleration concept can provide a much higher acceleration gradient compared to that of the conventional accelerators, but also the produced proton beams have a much shorter pulse duration as well as a much lower transverse emittance. Therefore, such proton beams have various potential applications, such as proton cancer therapy [76] and proton imaging.…”

Section: Effect Of Sub-wavelength Structures On Laser Absorptionmentioning

confidence: 99%