Superdeformation in {sup 91}Tc

A high-spin rotational band with 11 {gamma}-ray transitions has been observed in {sup 91}Tc. The dynamical moment of inertia as well as the transition quadrupole moment of 8.1{sup +1.9}{sub -1.4} eb measured for this band show the characteristics of a superdeformed band. However, the shape is more e...

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Bibliographic Details
Published in:Physics letters. B 2000-11, Vol.492 (3-4 ; Nov. 2, 2000)
Main Authors: Ideguchi, E., Cederwall, B., Wyss, R., Back, T., Lagergren, K., Carpenter, M. P., Janssens, R. V. F., Kondev, F. G., Lauritsen, T., Lister, C. J., Seweryniak, D., Wiedenhoever, I., Physics, Royal Inst. of Tech
Format: Article
Language:English
Subjects:
ALLOCATIONS
CONFIGURATION
DEFORMATION
MOMENT OF INERTIA
NUCLEI
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUADRUPOLE MOMENTS
ROTATIONAL STATES
SHAPE
SUPERDEFORMED NUCLEI
WELLS
WOODS-SAXON POTENTIAL
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Summary:A high-spin rotational band with 11 {gamma}-ray transitions has been observed in {sup 91}Tc. The dynamical moment of inertia as well as the transition quadrupole moment of 8.1{sup +1.9}{sub -1.4} eb measured for this band show the characteristics of a superdeformed band. However, the shape is more elongated than in the neighbouring A=80-90 superdeformed nuclei. Theoretical interpretations of the band within the cranked Strutinsky approach based on two different Woods-Saxon potential parameterizations are presented. Even though an unambiguous configuration assignment proved difficult, both calculations indicate a larger deformation and at least three additional high-N intruder orbitals occupied compared to the lighter SD nuclei.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(00)01114-X