N
Nikita Medvedev
Researcher at Academy of Sciences of the Czech Republic
Publications - 160
Citations - 2953
Nikita Medvedev is an academic researcher from Academy of Sciences of the Czech Republic. The author has contributed to research in topics: Electron & Swift heavy ion. The author has an hindex of 25, co-authored 139 publications receiving 2161 citations. Previous affiliations of Nikita Medvedev include Max Planck Society & Kaiserslautern University of Technology.
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Achieving few-femtosecond time-sorting at hard X-ray free-electron lasers
Marion Harmand,Marion Harmand,Ryan Coffee,Mina R. Bionta,Mina R. Bionta,M. Chollet,Doug French,Diling Zhu,David Fritz,Henrik T. Lemke,Nikita Medvedev,Beata Ziaja,Sven Toleikis,Marco Cammarata +13 more
TL;DR: In this article, a measure-and-sort approach was used to achieve sub-10 fs root-mean-squared (rms) error measurement at hard X-ray FELs, far beyond the 100-200 fs rms jitter limitations.
Journal ArticleDOI
Single-shot pulse duration monitor for extreme ultraviolet and X-ray free-electron lasers
R. Riedel,A. Al-Shemmary,Michael Gensch,Torsten Golz,Marion Harmand,Nikita Medvedev,Mark J. Prandolini,Klaus Sokolowski-Tinten,Sven Toleikis,U. Wegner,B. Ziaja,Nikola Stojanovic,Franz Tavella +12 more
TL;DR: A versatile single-shot temporal diagnostic tool that allows the determination of the extreme ultraviolet pulse duration and the relative arrival time with respect to an external pump-probe laser pulse is shown.
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Thermal and nonthermal melting of silicon under femtosecond x-ray irradiation
TL;DR: In this article, the authors studied the interplay of the thermal and non-thermal effects in silicon under femtosecond x-ray irradiation and proposed their unified treatment by going beyond the Born-Oppenheimer approximation within a hybrid model based on tight-binding molecular dynamics.
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Short-Time Electron Dynamics in Aluminum Excited by Femtosecond Extreme Ultraviolet Radiation
TL;DR: The femtosecond dynamics of the electrons in aluminum after an intense extreme ultraviolet pulse is investigated by Monte Carlo simulations and excellent agreement with measurements is found between predicted and measured energy scales.
Journal ArticleDOI
Tracks and voids in amorphous Ge induced by swift heavy-ion irradiation
Mark C Ridgway,Thomas Bierschenk,Raquel Giulian,Boshra Afra,Matias Rodriguez,Leandro Araujo,Aidan Byrne,Nigel Kirby,Olli H. Pakarinen,Flyura Djurabekova,Kai Nordlund,Marika Schleberger,O. Osmani,Nikita Medvedev,Baerbel Rethfeld,Patrick Kluth +15 more
TL;DR: Ion tracks formed in amorphous Ge by swift heavy-ion irradiation have been identified with experiment and modeling to yield unambiguous evidence of tracks in an amorphously semiconductor.