Параметри деформації атомних ядер з даних по фотопоглинанню та їх вплив на перерізи фотопоглинання
The values of the effective quadrupole deformation parameter of atomic nuclei have been calculated, and their uncertainties have been estimated. The approximation of axially symmetric nuclei and the energy splitting values of two modes of the isovector giant dipole resonance (GDR) for the photoabsor...
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| Date: | 2025 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English Ukrainian |
| Published: |
Publishing house "Academperiodika"
2025
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2023611 |
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| Journal Title: | Ukrainian Journal of Physics |
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Ukrainian Journal of Physics| Summary: | The values of the effective quadrupole deformation parameter of atomic nuclei have been calculated, and their uncertainties have been estimated. The approximation of axially symmetric nuclei and the energy splitting values of two modes of the isovector giant dipole resonance (GDR) for the photoabsorption cross-sections of 144 isotopes from 6Li to 239Pu are used. For axially symmetric atomic nuclei with 155 < A < 190 and 225 < A < 250, the determined effective values of the quadrupole deformation parameter are exactly identical to the values of the quadrupole deformation parameter β. The results are compared with the values obtained in other approaches. It is demonstrated that the obtained absolute values of the quadrupole deformation parameter for the GDR excitation, as a rule, coincide, within the uncertainty limits, with the absolute values of deformations in the ground nucleus state. For the 100Mo and 178Hf nuclei, the dependences of the partial photoabsorption cross-sections on the GDR characteristics are calculated and analyzed. |
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