Ruthenium under ultrafast laser excitation: model and dataset for equation of state, conductivity, and electron-ion coupling

0561950 - FZÚ 2023 RIV DE eng J - Journal Article
Petrov, Y. - Migdal, K. - Inogamov, N. - Khokhlov, V. - Ilnitsky, D. - Milov, I. - Medvedev, Nikita - Lipp, V. - Zhakhovsky, V.
Ruthenium under ultrafast laser excitation: model and dataset for equation of state, conductivity, and electron-ion coupling.
Data in Brief. Roč. 28, Feb (2020), č. článku 104980. ISSN 2352-3409
R&D Projects: GA MŠMT LTT17015; GA MŠMT EF16_027/0008215
Grant - others:MOBILITY FZU(XE) CZ.02.2.69/0.0/0.0/16_027/0008215
Institutional support: RVO:68378271
Keywords : transition metal * high electron temperature * two-temperature model * equation of state * transport coefficients * electron-phonon heat transfer
OECD category: Fluids and plasma physics (including surface physics)
Method of publishing: Open access

IInteraction of ultrashort laser pulses with materials can bring the latter to highly non-equilibrium states, where the electronic temperature strongly differs from the ionic one. The properties of such excited material can be considerably different from those in a hot, but equilibrium state. The reliable modeling of laser-irradiated target requires careful analysis of its properties in both regimes. This paper reports a procedure which provides the equations of state of ruthenium using density functional theory calculations. The obtained data are fitted with analytical functions. The electron thermal conductivity and electron-phonon coupling factor are also calculated. The obtained analytical expressions can be used in two-temperature hydrodynamics modeling of Ru targets pumped by ultrashort laser pulses. The data is related to the research article “Similarity in ruthenium damage induced by photons with different energies: From visible light to hard X-rays.
Permanent Link: https://hdl.handle.net/11104/0334378