[HTML][HTML] Frontiers, challenges, and solutions in modeling of swift heavy ion effects in materials

N Medvedev, AE Volkov, R Rymzhanov… - Journal of Applied …, 2023 - pubs.aip.org
Since a few breakthroughs in the fundamental understanding of the effects of swift heavy
ions (SHIs) decelerating in the electronic stopping regime in the matter have been achieved …

Modeling Time‐Resolved Kinetics in Solids Induced by Extreme Electronic Excitation

N Medvedev, F Akhmetov… - Advanced Theory …, 2022 - Wiley Online Library
The authors present a concurrent Monte Carlo (MC)–molecular dynamics (MD) approach to
modeling matter response to excitation of its electronic system at nanometric scales. The two …

XTANT-3: X-ray-induced thermal and nonthermal transitions in matter: Theory, numerical details, user manual

N Medvedev - arXiv preprint arXiv:2307.03953, 2023 - arxiv.org
This is the user manual for the hybrid code XTANT-3, simulating intense femtosecond X-ray
irradiation of matter. The code combines a few models into one with feedbacks: transport …

Electronic nonequilibrium effect in ultrafast-laser-irradiated solids

N Medvedev - Physica Scripta, 2023 - iopscience.iop.org
This paper describes the effects of electronic nonequilibrium in a simulation of ultrafast laser
irradiation of materials. The simulation scheme based on tight-binding molecular dynamics …

Atomic-scale insights into damage produced by swift heavy ions in polyethylene

P Babaev, F Akhmetov, S Gorbunov… - Journal of Materials …, 2023 - Springer
We describe the formation of swift heavy ion tracks in polyethylene (PE) by combining the
Monte Carlo code TREKIS, which models electronic excitation in nanometric proximity of the …

Damage Mechanisms in Polyalkenes Irradiated with Ultrashort XUV/X-Ray Laser Pulses

N Nikishev, N Medvedev - The Journal of Physical Chemistry B, 2024 - ACS Publications
Although polymers are widely used in laser-irradiation research, their microscopic response
to high-intensity ultrafast XUV and X-ray irradiation is still largely unknown. Here, we …

Nonthermal effects in solids after swift heavy ion impact

N Medvedev, R Voronkov, AE Volkov - Nuclear Instruments and Methods in …, 2024 - Elsevier
This contribution is a brief introduction to nonthermal effects related to modifications of the
interatomic potential upon ultrafast excitation of the electronic system of solids, primarily …

Multitemperature atomic ensemble: Nonequilibrium evolution after ultrafast electronic excitation

N Medvedev, AE Volkov - Physical Review E, 2024 - APS
Ultrafast laser radiation or beams of fast charged particles primarily excite the electronic
system of a solid driving the target transiently out of thermal equilibrium. Apart from the …

[PDF][PDF] XTANT-3: X-ray-induced Thermal And Nonthermal Transitions in Matter

N Medvedev - arXiv preprint arXiv:2307.03953, 2023 - researchgate.net
This document is specifically on the code XTANT-3 2 [1–3] and its features, many of which
are unique to this code. Note that XTANT-3 is a separate development from XTANT+[4], the …

[PDF][PDF] Non-ionizing cross section of electron scattering on atoms in matter accounting for dynamical screening effect

N Medvedev, DI Zainutdinov, AE Volkov - researchgate.net
We present a model of non-ionizing scattering of electrons on atomic ensemble in matter,
applicable in a wide electron energy range from~ eV up to relativistic ones. The approach …