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Information × Registration Number 0223U005354, 0123U102981 , R & D reports Title Influence of a supercritical magnetic field on spin-polarization effects in the processes of quantum electrodynamics popup.stage_title Head Diachenko Mykhailo M., к.ф.-м.н. Registration Date 20-12-2023 Organization Institute of Applied Physics National Academy of Sciences of Ukraine popup.description2  A theoretical study of the processes of photoproduction of an electron-positron pair and synchrotron radiation in a strong magnetic field was conducted. Taking into account the polarization of particles, analytical expressions of process probabilities for an arbitrary value of the field were obtained. The resonance width of quantum electrodynamics processes was found as the total probability of synchrotron radiation. It is shown that for the case when the electron radiates along the magnetic field, the radiation has a right circular polarization, and when it is perpendicular, the polarization will be normal for the main channel, and abnormal for the spin-flip. For other angles, with an increase in the value of the magnetic field, the circular polarization increases, and the linear polarization decreases, and at the same time, a cone of synchrotron radiation appears perpendicular to the field. It is shown that when a pair is created at zero Landau levels, electrons and positrons are created into the ground spin state. It was found that if one of the particles is created at the first and the second one at the zero Landau level, then the polarization of the first one will depend on the linear polarization of photon, and the second one is created in the ground spin state. It is shown that if a pair is created at the first excited Landau level, its polarization depends weakly on the photon polarization. Product Description popup.authors Diachenko Mykhailo M. Lebedynska Yuliia S. Lebedynskyi Serhii O. popup.nrat_date 2023-12-20 Close