Thermoluminescence and radiation-induced volume changes in CaF2 (Mn,RE) materials

The thermoluminescence properties of various CaF₂ materials (natural fluorite, CaF₂-glass ceramics and enamels) doped with RE oxides and Mn are investigated in details. Volumetric measurements show that γ-irradiation leads to a change in the volume density of powder samples of these materials. Depending on the character of the sample, positive (increased volume) or negative dilatation (decreased volume) can be observed during irradiation with doses within the range 1 C/kg–9 C/kg. As time elapses, the radiation-induced alteration of the sample volume is relaxed and after 2–3 months reaches again the initial volume density of the sample. The unexpected result of radiation-induced volume changes are discussed in details accounting for supplementary X-ray, electron microscopy and EPR studies.     

The Motion of a Nonholonomic Chaplygin Sphere in a Magnetic Field,the Grioli Problem,and the Barnett–London Effect

Doklady Physics - In this paper, we consider the motion of a nonholonomic Chaplygin sphere on a plane in a constant magnetic field under the assumption that the sphere has dielectric and...     

About the Nature of Bead Lightning and Laboratory “Plasmoids”

Doklady Physics - The results of experimental investigations of an electric discharge in an aqueous medium are presented. In the experiment, the formation of luminous balls, which sometimes...     

Underground Physics and the Nonlinear Delayed Barometric Effect of the Gamma-Ray Background

Journal of Experimental and Theoretical Physics - The electronic, magnetic, and optical properties of MnGa2O4 in the structure of the normal and inverse spinels are subjected to an ab initio...     

Magnetization Reversal of Ferromagnetic CoFeB Films and CoFeB/Ta/CoFeB Heterostructures in the Stray Field of Fe/Fe3O4 Nanoparticles

Journal of Experimental and Theoretical Physics - The magnetization reversal of the MgO/CoFeB/Ta/CoFeB/MgO/Ta/GaAs heterostructures and the ultrathin MgO/CoFeB/MgO/Ta/GaAs films with a...     

Anharmonic Effects in the Theory of Finite Fermi Systems

Physics of Atomic Nuclei - Some results obtained by E.E. Saperstein and his coauthors in the theory of the ground state and low-lying excited states of magic and semimagic nuclei are...     

Semimicroscopic Description of High-Energy Charge-Exchange Spin-Monopole Excitations in Medium-Heavy Spherical Nuclei

Physics of Atomic Nuclei - The semimicroscopic particle–hole dispersive optical model developed recently is applied to describing main properties of the Gamow–Teller and charge-exchange...     

Radioactive-Ion Beams for the Fission Study of Heavy Neutron-Rich Nuclei

Physics of Atomic Nuclei - Quasi-elastic, multi-nucleon transfer reactions induced by the radioactive-ion beams with energy 4–6 MeV/u allow one to produce moderately excited neutron-rich...     

Current Status and Objectives of Modernizing the Engineering,Physical, and Energy Infrastructure of the SFT Facility for the Implementation of the Ignitor Project

Physics of Atomic Nuclei - The Ignitor tokamak nuclear fusion research project is one of the most ambitious initiatives undertaken under the long-term scientific cooperation program between the...