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Structure of the odd-A, shell-stabilized nucleus 253/102No.
1Institut für Kernphysik, Universität zu Köln, Zülpicher Str 77, 50937 Köln, Germany.
Physical Review Letters
|August 11, 2005
Summary
Researchers studied Nobelium-253 using in-beam gamma-ray spectroscopy. A rotational band was identified, providing critical data for nuclear models of heavy elements.
Area of Science:
- Nuclear Physics
- Spectroscopy
- Heavy Element Research
Background:
- Understanding the properties of the heaviest nuclei is crucial for testing nuclear structure models.
- Spectroscopic data on superheavy elements like Nobelium (No) are scarce due to low production cross-sections.
Purpose of the Study:
- To perform in-beam gamma-ray spectroscopic measurements on Nobelium-253 (253No).
- To characterize the nuclear structure and test contemporary nuclear models for the heaviest elements.
Main Methods:
- Utilized in-beam gamma-ray spectroscopy for 253No.
- Developed novel methods for sparse data interpretation, including spectral comparisons and gammagamma matrix analysis.
- Measured cross sections at approximately 50 nb.
Main Results:
- Identified a single rotational band in 253No up to a probable spin of 39/2ħ.
- Assigned this band to the 7/2+[624] Nilsson configuration.
- Bandhead energy and moment of inertia offer discriminating tests for nuclear models.
Conclusions:
- The observed rotational band provides valuable experimental data for the heaviest nuclei.
- The findings contribute to refining theoretical models of nuclear structure in this region.