Petkov, P., Delion, D-S and Mueller-Gatermann, C. (2020). Collectivity of the 2(1)(+) state in Z <= 82 even-even nuclei probed by a ratio involving dynamic and static electromagnetic E2 moments: Evolution of the quadrupole degrees of freedom and a new signature for shape coexistence. Phys. Rev. C, 102 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1089-490X

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Abstract

We present a new approach to investigate the evolution of collectivity on the nuclear map based on the ratio R = B(E2; 2(1)(+) -> 0(1)(+))(exp)/B(E2;2(1)(+) -> 0(1)(-))(Q), where the quantity in the denominator is calculated using the quadrupole moment of the 2(1)(+) level when known. The systematics of such ratios in even-even nuclei reveals interesting features including signatures for particular collective excitations and sensitivity to shell- and subshell closures. A reproduction of these data by theoretical models is highly desirable with the potential to shed more light on the interplay between collective and single-particle motions. In particular, a new signature for shape coexistence was found: R < 1.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Petkov, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delion, D-SUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mueller-Gatermann, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-315029
DOI: 10.1103/PhysRevC.102.044317
Journal or Publication Title: Phys. Rev. C
Volume: 102
Number: 4
Date: 2020
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1089-490X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ALPHA-CLUSTER STRUCTURE; TRANSITIONS; SYSTEMATICSMultiple languages
Physics, NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/31502

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