
Pavel Golubev
Senior lecturer

Spectroscopy along flerovium decay chains. II. Fine structure in odd-A 289Fl
Author
Summary, in English
Fifteen correlated α-decay chains starting from the odd-A superheavy nucleus 289Fl were observed following the fusion-evaporation reaction 48Ca+244Pu. The results call for at least two parallel α-decay sequences starting from at least two different states of 289Fl. This implies that close-lying levels in nuclei along these chains have quite different spin-parity assignments. Further, observed α-electron and α-photon coincidences, as well as the α-decay fine structure along the decay chains, suggest a change in the ground-state spin assignment between 285Cn and 281Ds. Our experimental results, on the excited level structure of the heaviest odd-N nuclei to date, provide a direct testing ground for theory. This is illustrated by comparison with new nuclear structure calculations based on the symmetry-conserving configuration mixing theory.
Department/s
- Nuclear physics
- Mathematical Physics
Publishing year
2023-02-06
Language
English
Publication/Series
Physical Review C
Volume
107
Issue
2
Full text
- Available as PDF - 508 kB
- Download statistics
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
Keywords
- Superheavy elements
- Nuclear spectroscopy
- Alpha decay
- Mean field theory
- Island of stability
Status
Published
Project
- Characterization of New Superheavy Elements
- Nuclear Structure at the Limits: Isotope-selective Spectroscopy
- Spectroscopy along Decay Chains of Element 114, Flerovium
ISBN/ISSN/Other
- ISSN: 2469-9985