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Information × Registration Number 0307U001702, 0106U003130 , R & D reports Title Theory of multiparticle systems of fermions and bosons popup.stage_title Формфактори ядер 6Li, 7Li та еволюція і взаємодія фононних пучків у надплинному гелію Head Berezhnoy Yuriy Anatoliyovich, Доктор фізико-математичних наук Registration Date 19-04-2007 Organization Kharkov national university named after V.N. Karazin popup.description2 The subject of investigation in considered research project is the determination of form-factors and mean square root radius of nuclei 6Li, 7Li and calculations of thermodynamic values of strongly anisotropic phonon systems in superfluid helium. The main purpose of this work is the calculation of parameters of nucleus density of considered nuclei and the determination mean square root radius of these nuclei from the comparison with the respective experimental data, as well as the solution of the problem about the motion of phonon pulses in superfluid helium. The modern nuclear physics has a lot of information about nucleus structure. The study of electron scattering by nucleus is the important source of information about nuclear form-factors and the mean square root radius. This information is the reliable basis for creation of various nucleus models and phenomenological nuclear wave functions, as well as the cross-sections of various processes of interaction of hadrons with considered nuclei. Phonons,created by heater immersed in superfluid helium, are the strongly anisotropic system, which possesses very unusual properties. One of the unusual phenomena is the creation of high energy phonon by the system of phonons with very low energy. At present the experimental data for angular scattering of l-phonons and h-phonons exists for pulses of various length and power. So, the creation of the theory that could explain and describe these data is important. Product Description popup.authors popup.nrat_date 2020-04-02 Close