0487396 - FZÚ 2018 RIV GB eng J - Článek v odborném periodiku
Tavella, F. - Höppner, H. - Tkachenko, V. - Medvedev, Nikita - Capotondi, F. - Golz, T. - Kai, Y. - Manfredda, M. - Pedersoli, E. - Prandolini, M.J. - Stojanovic, N. - Tanikawa, T. - Teubner, U. - Toleikis, S. - Ziaja, B.
Soft x-ray induced femtosecond solid-to-solid phase transition.
High energy density physics. Roč. 24, Sep (2017), s. 22-27. ISSN 1574-1818. E-ISSN 1878-0563
Institucionální podpora: RVO:68378271
Klíčová slova: soft x-ray * ultrashort x-ray pulses * grafitization of diamond * non-thermal phase transition
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 1.696, rok: 2017 ; AIS: 0.532, rok: 2017
DOI: https://doi.org/10.1016/j.hedp.2017.06.001

Soft x-rays were applied to induce graphitization of diamond through a non-thermal solid-to-solid phase transition. This process was observed within poly-crystalline diamond with a time-resolved experiment using ultrashort soft x-ray pulses of duration 52.5 fs and cross correlated by an optical pulse of duration 32.8 fs. This scheme enabled for the first time the measurement of a phase transition on a timescale of similar to 150 fs. Excellent agreement between experiment and theoretical predictions was found, using a dedicated code that followed the non-equilibrium evolution of the irradiated diamond including all transient electronic and structural changes. These observations confirm that soft x-rays can induce a non-thermal ultra fast solid-to-solid phase transition on a hundred femtosecond timescale.
Trvalý link: http://hdl.handle.net/11104/0282063