P
Petr Hruška
Researcher at Charles University in Prague
Publications - 53
Citations - 530
Petr Hruška is an academic researcher from Charles University in Prague. The author has contributed to research in topics: Positron annihilation spectroscopy & Microstructure. The author has an hindex of 9, co-authored 50 publications receiving 385 citations. Previous affiliations of Petr Hruška include Academy of Sciences of the Czech Republic.
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Origin of green luminescence in hydrothermally grown ZnO single crystals
Jakub Čížek,Jan Valenta,Petr Hruška,Oksana Melikhova,Ivan Procházka,Michal Novotný,Jiří Bulíř +6 more
TL;DR: In this article, the authors combine photoluminescence and positron annihilation studies of hydrothermally grown ZnO crystals with stoichiometry varied by controlled annealing enabled them to clarify the origin of green luminescence.
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Structural characterization of ultrafine-grained interstitial-free steel prepared by severe plastic deformation
TL;DR: In this article, the development of the microstructure as a function of the number of HPT turns was studied at the centre, half-radius and periphery of the HPT-processed disks by X-ray line profile analysis (XLPA), positron annihilation spectroscopy (PAS) and electron microscopy.
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Heat treatment and age hardening of Al–Si–Mg–Mn commercial alloy with addition of Sc and Zr
Martin Vlach,Jakub Čížek,Bohumil Smola,Oksana Melikhova,M. Vlček,Veronika Kodetová,Hana Kudrnová,Petr Hruška +7 more
TL;DR: In this paper, microstructure and precipitation processes in an Al-Si-Mg-Mn-Sc-Zr alloy were studied, and the apparent activation energy for the Al 6 (Mn,Fe)-phase precipitation was calculated as (170±−20) kJ·mol −1.
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Quantum chaos in the nuclear collective model: Classical-quantum correspondence
TL;DR: Spectra of the geometric collective model of atomic nuclei are analyzed to identify chaotic correlations among nonrotational states and Corresponding signatures are verified also on the quantum level for different schemes of quantization and with a variable classicality constant.
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Quantum chaos in the nuclear collective model. II. Peres lattices.
TL;DR: The method by Peres is applied to study ordered and disordered patterns in quantum spectra drawn as lattices in the plane of energy vs average of a chosen observable to provide an efficient tool for studying structural changes in eigenstates across quantum spectRA of general systems.