Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasma

L. R. Yin; X. F. Li; Y. J. Gu; N. Cao; Q. Kong; M. Büscher; S. M. Weng; M. Chen; Z. M. Sheng

doi:10.1063/5.0279175

Volume 11 Issue 1

Jan. 2026

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L. R. Yin, X. F. Li, Y. J. Gu, N. Cao, Q. Kong, M. Büscher, S. M. Weng, M. Chen, Z. M. Sheng. Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasma[J]. Matter and Radiation at Extremes, 2026, 11(1): 017202. doi: 10.1063/5.0279175

Citation:

L. R. Yin, X. F. Li, Y. J. Gu, N. Cao, Q. Kong, M. Büscher, S. M. Weng, M. Chen, Z. M. Sheng. Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasma[J]. Matter and Radiation at Extremes, 2026, 11(1): 017202. doi: 10.1063/5.0279175

Citation:

L. R. Yin, X. F. Li, Y. J. Gu, N. Cao, Q. Kong, M. Büscher, S. M. Weng, M. Chen, Z. M. Sheng. Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasma[J]. Matter and Radiation at Extremes, 2026, 11(1): 017202. doi: 10.1063/5.0279175

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Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasma

doi: 10.1063/5.0279175

L. R. Yin^1
,,
X. F. Li^{2
,
,
,},
Y. J. Gu^3
,,
N. Cao⁴,
Q. Kong^{1
,
,
,},
M. Büscher^{5, 6
,},
S. M. Weng^{7, 8
,},
M. Chen^{7, 8
,},
Z. M. Sheng^{7, 8, 9
,}

1.
Key Laboratory of Nuclear Physics and Ion-Beam Application (MoE), Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
2.
State Key Laboratory of Ultra-intense Laser Science and Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
3.
SANKEN (Institute of Scientific and Industrial Research), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
4.
Sichuan Research Institute, Shanghai Jiao Tong University, Chengdu, Sichuan 610200, China
5.
Peter Grünberg Institut (PGI-6), Forschungszentrum Jülich, Wilhelm-Johnen-Str. 1, 52425 Jülich, Germany
6.
Institut für Laser-und Plasmaphysik, Heinrich–Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
7.
Key Laboratory for Laser Plasmas (MoE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
8.
Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China
9.
Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China

More Information

Corresponding author: a)Authors to whom correspondence should be addressed: xiaofengli@siom.ac.cn and qkong@fudan.edu.cn
Received Date: 2025-05-06
Accepted Date: 2025-10-10

Available Online: 2026-01-01

Publish Date: 2026-01-01

Abstract

Abstract

The effects of initial spin orientation on the final electron beam polarization in laser wakefield acceleration in a pre-polarized plasma are investigated theoretically and numerically. From the results of variation of the initial spin direction, the spin dynamics of the electron beam are found to depend on the self-injection mechanism. The effects of wakefields and laser fields are studied using test particle dynamics and particle-in-cell simulations based on the Thomas–Bargmann–Michel–Telegdi equation. Compared with transverse injection, longitudinal injection is found to be preferable for obtaining a highly polarized electron beam.

The authors have no conflicts to disclose.
Conflict of Interest
Author Contributions
L. R. Yin: Data curation (equal); Formal analysis (equal); Investigation (equal); Validation (equal); Visualization (equal); Writing – review original draft (equal). X. F. Li: Conceptualization (equal); Project administration (equal); Software (equal); Supervision (equal); Writing – review review & editing (equal). Y. J. Gu: Writing – review review & editing (equal). N. Cao: Writing – review review & editing (equal). Q. Kong: Software (equal); Supervision (equal); Writing – review review & editing (equal). M. Büscher: Writing – review review & editing (equal). S. M. Weng: Writing – review review & editing (equal). M. Chen: Writing – review review & editing (equal). Z. M. Sheng: Writing – review review & editing (equal).
X. F. Li and Q. Kong proposed the idea, supervised the work, and improved the manuscript. L. R. Yin developed the theoretical model, carried out all simulations, analyzed the results, and drafted the manuscript. X. F. Li, Y. J. Gu, N. Cao, M. Büscher, S. M. Weng, M. Chen, and Z. M. Sheng improved the manuscript. All authors discussed the results, commented on the manuscript, and agreed on the contents.
The data that support the findings of this study are available from the corresponding author upon reasonable request.

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References(61)

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