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PreprintarXiv licencearXiv

Analytical theory of coherent radiation and radiation friction in laser-plasma collisions

  • E. G. Gelfer
  • A. M. Fedotov
  • M. P. Malakhov
  • Th. Benahmed
  • J. Custodio
  • O. Klimo
  • S. Weber
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Abstract

We develop an analytical theory of coherent (scaled quadratically with the number of particles) radiation and coherent radiation friction in a head-on collision of a dense charged particle bunch with an intense laser pulse. We demonstrate that the low-frequency coherent radiation in the forward and backward directions dominates the energy-momentum losses of a mildly relativistic bunch and can result in a substantial enhancement of the overall radiation friction as compared to the incoherent case. We derive the scaling laws for the average momentum losses of the bunch over the collision with respect to laser intensity, pulse duration, and particle bunch parameters, and show their robustness with respect to laser polarization and the shape of the particle distribution in the bunch.

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Cite

BibTeXRIS
BibTeX
@misc{gelfer2026analytical,
  title = {{Analytical theory of coherent radiation and radiation friction in laser-plasma collisions}},
  author = {E. G. Gelfer and A. M. Fedotov and M. P. Malakhov and Th. Benahmed and J. Custodio and O. Klimo and S. Weber},
  howpublished = {arXiv},
  year = {2026},
  month = may,
  doi = {10.48550/arxiv.2605.28370},
  eprint = {2605.28370},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.28370},
}
RIS
TY  - UNPB
TI  - Analytical theory of coherent radiation and radiation friction in laser-plasma collisions
AU  - E. G. Gelfer
AU  - A. M. Fedotov
AU  - M. P. Malakhov
AU  - Th. Benahmed
AU  - J. Custodio
AU  - O. Klimo
AU  - S. Weber
PY  - 2026
DA  - 2026/05/27
PB  - arXiv
DO  - 10.48550/arxiv.2605.28370
UR  - https://arxiv.org/abs/2605.28370
AB  - We develop an analytical theory of coherent (scaled quadratically with the number of particles) radiation and coherent radiation friction in a head-on collision of a dense charged particle bunch with an intense laser pulse. We demonstrate that the low-frequency coherent radiation in the forward and backward directions dominates the energy-momentum losses of a mildly relativistic bunch and can result in a substantial enhancement of the overall radiation friction as compared to the incoherent case. We derive the scaling laws for the average momentum losses of the bunch over the collision with respect to laser intensity, pulse duration, and particle bunch parameters, and show their robustness with respect to laser polarization and the shape of the particle distribution in the bunch.
ER  -