Персона: Урин, Михаил Генрихович
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Обобщенный метод связанных каналов и одноквазичастичные силовые функции
СВОЙСТВА ИЗОСКАЛЯРНЫХ ГИГАНТСКИХ МУЛЬТИПОЛЬНЫХ РЕЗОНАНСОВ В СРЕДНЕ-ТЯЖЁЛЫХ СФЕРИЧЕСКИХ ЯДРАХ: ПОЛУМИКРОСКОПИЧЕСКОЕ ОПИСАНИЕ
В рамках полумикроскопической частично-дырочной дисперсионной оптической модели предложено описание свойств изоскалярных гигантских мультипольных резонансов в ядре 142Nd. Некоторые результаты сравниваются с полученными недавно для этого ядра экспериментальными данными.
Semimicroscopic Description of Isoscalar Giant Multipole Resonances in the 208Pb Nucleus
© 2020, Pleiades Publishing, Ltd.Abstract: An approach to describing main properties of isoscalar giant multipole resonances in medium-heavy closed-shell nuclei is proposed within the particle–hole dispersive optical model formulated recently. The description includes the energy-averaged strength function, projected transition density, and partial branching ratios for direct single-nucleon decay. The results obtained within this approach for the 208Pb nucleus are compared with available experimental data.
Оптико-оболочечный подход к интерпретации основных релаксационных параметров аналоговых резонансов в среднетяжелых ядрах
On Tensor Correlations in the Formation of Charge-Exchange Giant Spin-Multipole Resonances in Medium-Heavy Magic Parent Nuclei
© 2022, Pleiades Publishing, Ltd.Abstract: An approach to taking into account tensor correlations in the formation of charge-exchange giant spin-multipole resonances in medium-heavy magic parent nuclei is proposed within the particle–hole dispersive optical model based on the continuum version of the random-phase approximation. The approach is implemented via its application to describing strength functions for the Gamow–Teller resonance and giant spin-monopole resonances in the 208Pb parent nucleus. The results of the calculations are compared with available experimental data.
О РАСПРЕДЕЛЕНИИ ГАМОВ-ТЕЛЛЕРОВСКОЙ СИЛЫ В СРЕДНЕТЯЖЕЛЫХ МАГИЧЕСКИХ МАТЕРИНСКИХ ЯДРАХ
В рамках полумикроскопической частично-дырочной дисперсионной оптической модели предложено описание распределения силы Гамов-Теллеровских возбуждений в ряде магических материнских ядер. Из сравнения вычисленной в широком энергетическом интервале силовой функции Гамов-Теллеровского резонанса в материнских ядрах 48Ca, 90Zr, 132Sn, 208Pb с соответствующими экспериментальными данными для каждого ядра определены интенсивность спин-изоспиновой части сил Ландау-Мигдала и величина quenching фактора.
Properties of Gamow-Teller and charge-exchange giant spin-monopole resonances in medium-heavy closed-shell parent nuclei: A semimicroscopic description
Coulomb Description of High-Energy Charge-Exchange Monopole Excitations in Medium-Heavy Spherical Nuclei
© 2019, Pleiades Publishing, Ltd.Abstract: The recently proposed approach to the description of high-energy charge-exchange monopole excitations in medium-heavy spherical nuclei is implemented to quantitatively estimate the main damping parameters of the related giant resonances including the isobaric analog resonance. The approach consists in incorporating the “Coulomb description” of isospin-forbidden processes into the particle-hole dispersive optical model. The results obtained for a few parent nuclei with Z = 50 and Z = 82 are compared with the respective experimental data.
Properties of charge-exchange giant spin-dipole resonances in medium-heavy closed-shell parent nuclei: A semimicroscopic description
Semimicroscopic Description of High-Energy Charge-Exchange Spin-Monopole Excitations in Medium-Heavy Spherical Nuclei
© 2020, Pleiades Publishing, Ltd.Abstract: The semimicroscopic particle–hole dispersive optical model developed recently is applied to describing main properties of the Gamow–Teller and charge-exchange giant spin-monopole resonances in medium-heavy closed-shell nuclei. The description in question includes energy-averaged strength functions, projected transition densities, and partial branching ratios for direct single-nucleon decay. By way of example, this approach is implemented for the 208Pb parent nucleus. The results of respective calculations are compared with available experimental data.