21 Universitetska St., 88017 Uzhgorod, Ukraine
Phone: (03122) 4 3650; 4 3524; fax: (03122) 4 3650;
e-mail: an@zvl.iep.uzhgorod.ua;
http://www.iep.uzhgorod.ua
Principal research areas:
fundamental (theoretical, experimental and applied) studies in low-energy atomic and nuclear physics, physics of electronic and ionic collisions, physical and quantum electronics, non-linear optics, as well as elaboration of new methods to study and develop new devices and optical materials for functional and quantum electronics.
Science schools:
Physics of electron collisions with atoms and ions, spectroscopy of atoms and ions (leader – Prof. O. B. Shpenik, Dr. Sc. (Phys. Math.), NAS corresponding member, foreign member of the Hungarian Academy of Sciences, winner of the State Prize of Ukraine in Science and Technology and of NAS Ivan Puliuy Prize, Honoured Worker in Science and Technology of Ukraine).
New materials developed at the Institute and offered for joint upgrading and/or commercialization:
– a technology of producing protective, anti-reflective and light-dividing coatings for laser optic elements in visible and infrared spectral range;
– a technology of producing semiconductor and ferroelectric materials in nano-crystalline state, embedded in glass matrices, studies of their physical properties vs composition, size, matrix material towards developing electronic elements based on these materials;
– paratellurite single crystals of high optical quality (up to 60 mm in diameter and up to 40 mm long);
– lithium tetraborate single crystals applicable for dosimeter design.
Scientific achievements of the international level:
The resonant nature of near-threshold excitation of atom levels by electron impact was discovered. Along with cascade transitions, short-lived (t=10-13-10-15 s) states of negative ions – ‘resonances’ – were shown to play an important role in the excitation of atom energy levels, spontaneous decay of the resonances from excited states into an electron and an atom (ion), resulting in additional population of levels. Further studies showed this ‘resonance’ phenomenon to be universal, observed at elastic scattering of electrons by atoms, molecules and ions, as well as in the interaction of electrons with a solid surface. Using photon and electron spectroscopy techniques, threshold effects were found for Mg, Cd and Hg atoms alongside with a new phenomenon in atomic physics – interaction between an electron removed from the atom due to auto-ionizing and a scattered electron, resulting in the appearance and shift of a structure at the energy dependences of total scattering cross-sections. The data obtained were theoretically validated in terms of diagonalization method in perturbation theory and hyperspherical coordinate method.
The mechanism of ring-shape generation of bismuth-vapour laser was substantiated and a photodissociative laser on its dimers produced. Parameters of the plasma jet based on the mixture of inert gases with halogen agents were determined, which enabled continuous generation on excimer molecules to be obtained.