Positron collimation driven by channel fields excited by a Doppler-boosted laser pulse in the prefilled target

Yi-Nuo Liu; Zhang-Hu Hu; Wang-Wen Xu; Hao-Yuan Li; Jie-Jie Lan; You-Nian Wang

doi:10.1063/5.0333168

Volume 11 Issue 5

Sep. 2026

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Article Navigation > Matter and Radiation at Extremes > 2026 > 11(5): 057204

Yi-Nuo Liu, Zhang-Hu Hu, Wang-Wen Xu, Hao-Yuan Li, Jie-Jie Lan, You-Nian Wang. Positron collimation driven by channel fields excited by a Doppler-boosted laser pulse in the prefilled target[J]. Matter and Radiation at Extremes, 2026, 11(5): 057204. doi: 10.1063/5.0333168

Citation:

Yi-Nuo Liu, Zhang-Hu Hu, Wang-Wen Xu, Hao-Yuan Li, Jie-Jie Lan, You-Nian Wang. Positron collimation driven by channel fields excited by a Doppler-boosted laser pulse in the prefilled target[J]. Matter and Radiation at Extremes, 2026, 11(5): 057204. doi: 10.1063/5.0333168

Citation:

Yi-Nuo Liu, Zhang-Hu Hu, Wang-Wen Xu, Hao-Yuan Li, Jie-Jie Lan, You-Nian Wang. Positron collimation driven by channel fields excited by a Doppler-boosted laser pulse in the prefilled target[J]. Matter and Radiation at Extremes, 2026, 11(5): 057204. doi: 10.1063/5.0333168

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Positron collimation driven by channel fields excited by a Doppler-boosted laser pulse in the prefilled target

doi: 10.1063/5.0333168

1.
School of Physics, Dalian University of Technology, Dalian 116024, People’s Republic of China
2.
College of Science, Shenyang Institute of Engineering, Shenyang 110136, People’s Republic of China

More Information

Corresponding author: a)Author to whom correspondence should be addressed: zhanghu@dlut.edu.cn
Received Date: 2026-03-09
Accepted Date: 2026-06-03

Available Online: 2026-09-28

Publish Date: 2026-09-01

Abstract

Abstract

We propose an all-optical configuration for the integrated generation, collimation, and acceleration of positrons with laser–electron beam interaction in a channel target. The electromagnetic fields driven by a Doppler-boosted laser within the channel yield a high-collimated dense positron bunch (with a peak density of ∼10²⁸ m⁻³ and a duration of ∼27 fs). With the channel target, the beam divergence angle (FWHM) is decreased from 40° to 23°, and the monoenergetic peak is expected to upshift to hundreds of MeV. Moreover, automatic spatial and spectral separation between positrons and background electrons is also achieved, providing a promising scheme for future high-quality positron generation in compact integrated devices.

Conflict of Interest
The authors have no conflicts to disclose.
Y. N. Liu and Z. H. Hu developed the theoretical work. Y. N. Liu, W. W. Xu, and H. Y. Li conducted the simulations. Y. N. Liu, Z. H. Hu, J. J. Lan, and W. W. Xu analyzed the data and produced the figures. Z. H. Hu, J. J. Lan, W. W. Xu, and H. Y. Li helped review and interpret the data. Y. N. Liu and Z. H. Hu wrote the article. Z. H. Hu and Y. N. Wang supervised the work. All authors have reviewed, discussed, and agreed to the complete statement.
Yi-Nuo Liu: Validation (equal); Writing – original draft (equal); Writing – review & editing (equal). Zhang-Hu Hu: Formal analysis (equal); Methodology (equal). Wang-Wen Xu: Investigation (equal); Writing – review & editing (equal). Hao-Yuan Li: Software (equal); Validation (equal). Jie-Jie Lan: Validation (equal); Writing – review & editing (equal). You-Nian Wang: Supervision (equal); Validation (equal).
Author Contributions
The data that support the finding of this study are available from the corresponding author upon reasonable request.

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References(51)

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