Search academic texts

Information × Registration Number 0308U001433, 0106U003130 , R & D reports Title Theory of multiparticle systems of fermions and bosons popup.stage_title Диференціальні та інтегральні перерізи взаємодії ядер 6Li з ядрами і знаходження умов стійкості та побудова термодинаміки фононних і ротонних анізотропних систем Head Berezhnoy Yuriy Anatoliyovich, Доктор фізико-математичних наук Registration Date 04-02-2008 Organization Kharkov national university named after V.N. Karazin popup.description2 The subjects of the research are calculation of differential cross-section 6Li-nucleus interaction and determination of stability conditions and thermodynamic functions of phonon and roton anisotropic systems. The aims of the work are the calculation of differential cross-section 6Li-nucleus interaction based on cluster model, in which lithium nucleus are considered as alpha-cluster and deuteron, and the consideration of the processes of one phonon decay to three phonons, which provide fast equilibrium in phonon and roton anisotropic system. The modern nuclear physics includes many knowledge about nuclear structure. The study of proton-nuclei scattering is source of information about the mechanisms nuclear interaction and nuclear structure. This information is the basic for creation of various nuclear models and phenomenological nuclear wave functions, and cross-sections of various processes of hadron interaction with nucleus. Phonons and roton created by the heater immersed to superfluid helium are the anisotropic system of thermal excitations, which has a lot of unusual physical properties. One of such a property is the creation of phonons with high energy by the system of phonon with very low temperature, with was observed in experiments. At present, there exist experimental data about angular distribution of the system of phonon pulses with low and high energy with arbitrary length and power, which need a creation of theory that describes evolution of phonon systems. Product Description popup.authors popup.nrat_date 2020-04-02 Close