Positron Production by Runaway Electrons in Lorentzian Plasmas
We study electron–positron pair production by runaway electrons in fusion plasmas. The analysis uses a Coulomb logarithm derived for a Lorentzian plasma, which captures the high-energy “tail” in the non-Maxwellian runaway-electron distribution (κ-distribution). The Coulomb logarithm decreases as the distribution departs further from a Maxwellian. A lower kappa (κ) therefore reduces the Coulomb logarithm and yields a faster decline of the differential positron generation rate with increasing electron energy. Future work will explore how the electron–positron charge asymmetry manifests in their synchrotron radiation.
Authors
- M. Myrzaly (ORCID: https://orcid.org/0000-0002-8811-7099)
- M. N. Jumagulov (ORCID: https://orcid.org/0000-0003-0189-044X)
- K. N. Dzhumagulova (ORCID: https://orcid.org/0000-0002-2937-4482)
- Erik O. Shalenov (ORCID: https://orcid.org/0000-0001-6469-6623)
- Ranna Masheyeva (ORCID: https://orcid.org/0000-0002-6950-662X)
- Yeldos Seitkozhanov (ORCID: https://orcid.org/0000-0002-5123-4558)
Institutions
- Kazakh-British Technical University (KZ)
- Al-Farabi Kazakh National University (KZ)
- Satbayev University (KZ)
- HUN-REN Wigner Research Centre for Physics (HU)
Publication Details
- Journal
- Symmetry
- Published
- 2025-11-03
- DOI
- https://doi.org/10.3390/sym17111843
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 0.00