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Octupole vibration in superdeformed 152(66)Dy86
T Lauritsen1, R V F Janssens, M P Carpenter
1Argonne National Laboratory, Argonne, Illinois 60439, USA.
Physical Review Letters
|January 7, 2003
Summary
Researchers identified nine dipole transitions in the excited superdeformed band of 152Dy. This finding provides new insights into nuclear structure and collective vibrations in heavy nuclei.
Area of Science:
- Nuclear Physics
- Atomic Physics
Background:
- Superdeformed (SD) bands in atomic nuclei are characterized by highly deformed shapes.
- Understanding transitions between different nuclear states is crucial for nuclear structure models.
Purpose of the Study:
- To identify and characterize transitions linking an excited superdeformed band to the yrast superdeformed band in 152Dy.
- To determine the excitation energy, parity, and spin of levels within the excited superdeformed band.
Main Methods:
- Spectroscopic analysis of gamma-ray transitions.
- Identification of dipole transitions using coincidence measurements.
Main Results:
- Nine dipole transitions were identified, connecting the excited SD band to the yrast SD band in 152Dy.
- The excitation energy of the lowest level in the excited SD band was measured at 14,238 keV.
- Levels in the excited band were tentatively assigned negative parity and odd spin.
Conclusions:
- The observed properties suggest a rotational band built on a collective octupole vibration.
- The findings contribute to the understanding of nuclear shapes and collective excitations in 152Dy.