https://doi.org/10.1140/epjs/s11734-026-02257-3
Regular Article
Recent theoretical developments on electron removal from biological molecules interacting with bare and dressed helium beams
1
Institute Physics of Rosario, CONICET-UNR, Blvd. 27 de Febrero 210 Bis, 2000EKF, Rosario, Sante Fé, Argentina
2
Centre Lasers Intenses et Applications (CELIA), Université de Bordeaux-CNRS-CEA, 43 Rue Pierre Noailles, 33400, Talence, Nouvelle-Aquitaine, France
3
Laboratorio Colisiones Atómicas, Universidad Nacional Rosario, Av. Pellegrini 250, S2000, Rosario, Santa Fé, Argentina
a
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Received:
1
December
2025
Accepted:
3
March
2026
Published online:
15
March
2026
Abstract
Recent theoretical advances have enabled a deeper understanding of electron removal—including ionization, electron loss, and electron capture—from biologically relevant molecules under impact by helium projectiles in bare (He
, He
) and neutral (He
) states. To achieve biologically faithful predictions, state-of-the-art models have shifted focus from water-surrogate systems to DNA/RNA bases and amino acids—revealing substantial deviations in electron emission yields, localized energy deposition, and bond-breaking pathways. Employing and extending the Continuum Distorted Wave-Eikonal Initial State (CDW-EIS) framework to DNA/RNA nucleobases, this study provides differential and total cross sections for projectile energies ranging from tens of keV/u to several MeV/u.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
Christophe Champion, Juan M. Monti and Roberto D. Rivarola contributed equally to this work.
© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
