Work

Positron Production by Runaway Electrons in Lorentzian Plasmas

Year: 2025

Type: article

Abstract: 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.

Source: Symmetry

DOI: 10.3390/sym17111843

Authors: Erik O. Shalenov, Murat A. Myrzali, Yeldos S. Seitkozhanov, Karlygash N. Dzhumagulova, Ranna U. Masheyeva, Murat N. Jumagulov

Institutions: Satbayev University, Al-Farabi Kazakh National University, Kazakh-British Technical University, HUN-REN Wigner Research Centre for Physics

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

OpenAlex ID: W4415813223

FWCI:

Cites: 24

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