Back to Search
Start Over
Shell-Structure and Pairing Interaction in Superheavy Nuclei: Rotational Properties of theZ=104NucleusRf256
- Source :
- Physical Review Letters. 109
- Publication Year :
- 2012
- Publisher :
- American Physical Society (APS), 2012.
-
Abstract
- The rotational band structure of the $Z=104$ nucleus $^{256}\mathrm{Rf}$ has been observed up to a tentative spin of $20\ensuremath{\hbar}$ using state-of-the-art $\ensuremath{\gamma}$-ray spectroscopic techniques. This represents the first such measurement in a superheavy nucleus whose stability is entirely derived from the shell-correction energy. The observed rotational properties are compared to those of neighboring nuclei and it is shown that the kinematic and dynamic moments of inertia are sensitive to the underlying single-particle shell structure and the specific location of high-$j$ orbitals. The moments of inertia therefore provide a sensitive test of shell structure and pairing in superheavy nuclei which is essential to ensure the validity of contemporary nuclear models in this mass region. The data obtained show that there is no deformed shell gap at $Z=104$, which is predicted in a number of current self-consistent mean-field models.
- Subjects :
- Physics
010308 nuclear & particles physics
Nuclear Theory
Shell (structure)
General Physics and Astronomy
Moment of inertia
01 natural sciences
medicine.anatomical_structure
Atomic orbital
Pairing
0103 physical sciences
medicine
Atomic physics
Nuclear Experiment
010306 general physics
Spin (physics)
Electronic band structure
Nucleus
Energy (signal processing)
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 109
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi...........5f9a41661bb32272d44af60dc1d710bf