2020/01/31 by J. -P. Ebran, J-P Ebran, E. Khan +3
Physics and Astronomy · #Alpha decay #Axial symmetry #Electron #Isotonic #Neutrino Physics Research #Nuclear physics research studies #Nuclear structure #Quantum #Quantum Mechanics and Non-Hermitian Physics #SHELL model #Valence (chemistry) #Valence electron #nucl-th
paper · pdf · doi:10.1088/1361-6471/abcf25
8 pages, 5 figures
openalex created_date 2020/01/30 · arxiv created 2020/11/27 · openalex publication_date 2020/12/01 · arxiv updated 2021/02/03 · openalex updated_date 2026/08/05
Abstract Relativistic energy density functional approaches are known to well describe nuclear states which involve alpha clusters. Here, alpha emitting nuclei are analyzed through the behavior of the spatial localisation of nucleonic states, calculated with an axially deformed relativistic Hartree–Bogoliubov approach over the nuclear chart. The systematic occurrence of more localised valence states, having an n = 1 radial quantum number, allows to pinpoint nuclei in agreement with experimentally known alpha-emitters. The cases of 212 Po and 104 Te are investigated, showing the concomitant contributions of the pseudospin symmetry and the presence of n = 1 states, on the alpha preformation probability. The impact of the localisation of valence states, on alpha preformation probability, is then analyzed. It allows to study shell effects on this probability, over isotopic and isotonic chains. Finally, a phenomenological law is also provided, relating this probability to the radial quantum number of the valence states.