<B>Д 64.051.12 (Фізико-математичні науки) </B>
Постійне посилання колекціїhttps://ekhnuir.karazin.ua/handle/123456789/10745
01.04.08 — фізика плазми;
01.04.16 — фізика ядра, елементарних частинок і високих енергій
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Документ Динаміка та фазові стани макрочастинок в пучково-плазмових системах(Харків : Харківський національний університет імені В.Н. Каразіна, 2021) Ромащенко, Олена Володимирівна; Ромащенко, Елена Владимировна; Romashchenko, O.V.Romashchenko O.V. Dynamics and phase states of macroparticles in the beam-plasma systems. – Manuscript. Thesis for a Doctoral Degree in Physics and Mathematics: Speciality 01.04.08 – Plasma Physics. – V. N. Karazin Kharkiv National University of the Ministry of Education and Science of Ukraine. – Kharkiv. 2021. The thesis is devoted to the theoretical study and numerical modeling of the interaction of macroparticles (MPs) with the low-temperature plasma of the low pressure in the presence of the electron or ion beams. The physical mechanisms of the MP dynamics and phase states in the beam-plasma systems are shown to be complex ones. The processes of the MP charging in the plasma with electron (ion) beam, the processes of the energy exchange between the MP and the plasma with electron (ion) beam, that influence the dynamics and phase states of the MP in the beam-plasma systems, are considered. The effect of different electron emission processes on MP charging in the plasma with electron (ion) beam is studied in detail. In particular, the effect of the secondary electron emission, which is directly induced by electron (ion) beam bombardment, on MP is considered. Besides, the consequences of the MP bombardment by the electron (ion) beam due to the increasing of temperature and absolute value of negative potential of the MP are examined, namely the thermionic and field electron emissions. The theoretical model of the MP charging in the beam-plasma systems is modified to account the possible electron emission processes from the MP surface, such as secondary electron-electron emission, the thermionic electron emission, the field electron emission and thermal-field electron emission. The role of each electron emission is determined.Документ Генерація і транспортування іонних потоків в плазмових системах з комбінованими електричними і магнітними полями(Харків: ХНУ імені В. Н. Каразіна, 2016) Зиков, О.В.; Zykov, A.V.Zykov A.V. Generation and transport of ion fluxes in the plasma systems with combined electric and magnetic fields. – Manuscript. Thesis for Doctor degree of Science in Physics and Mathematics in speciality 01.04.08 - Plasma Physics. - V.N. Karazin Kharkiv National University. - Kharkiv 2016. The thesis is devoted to experimental and theoretical study of ion beams generation and transport in plasma systems with combined electric and magnetic fields, which are widely used in the surface engineering plasma technologies . The ignition processes and integral characteristics of gas discharges are studied in devices with the combined electric (DC, radio-frequency, potential and vortex) and magnetic (DC, AC) fields on the base of planar magnetron discharge in the accelerating and plasma modes, inductively coupled discharge, combined inductivecapacity and inductive-magnetron discharges. Analytical expressions for the ion energy cost and ionization coefficient for the electron group with different energy distribution function are derived and the three types of breakdown and ignition curves for direct-current gas discharge in the magnetic field have been obtained. The change of equilibrium plasma electrons temperature in planar magnetron discharge have been established experimentally and theoretically , as a result of high-energy electrons group existence. The density of this electron group is depended from the discharge power and determines the current–voltage characteristics of discharge at low pressure of working gas.