L-Shell Ionization during the Alpha Decay of Superheavy Nuclei from 117294Ts Tennessine Decay Chain and the Alpha Decay of the Polonium Isotope 84210Po


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Аннотация

The probabilities for L-shell ionization following the alpha decay of 117294Ts, 113286Nh, 109278Mt, and 105270Db superheavy nuclei from the decay chain of tennessine, which was synthesized at the Joint Institute for Nuclear Research (JINR Dubna), and the alpha decay of the isotope 84210Po are calculated and analyzed. The respective calculations rely on a quantum-mechanical model that takes into account alpha-particle tunneling through the Coulomb barrier of an atom. The relativistic electron wave functions obtained by the Dirac-Fock method were employed. The probabilities for L-shell ionization that were calculated here for the isotope 84210Po are in better agreement with experimental data than the results of earlier calculations. In contrast to what we have for K-shell ionization, where monopole transitions make a dominant contribution to the ionization probability, a significant contribution to the probability for L-shell ionization also comes from dipole and quadrupole transitions. The results of the present study will be of use in interpreting superheavy-element spectra obtained by methods of combined alpha, gamma, and electron-conversion spectroscopy.

Авторлар туралы

V. Nikulin

Ioffe Physical Technical Institute

Email: trzhask@thd.pnpi.spb.ru
Ресей, St. Petersburg, 194021

M. Trzhaskovskaya

Petersburg Nuclear Physics Institute

Хат алмасуға жауапты Автор.
Email: trzhask@thd.pnpi.spb.ru
Ресей, Gatchina, 188300

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