ISSN:
1434-601X
Keywords:
23.20.Lv
;
21.60.Ev
;
23.20.−g
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A band with a rotational pattern based on a state at 585.1 keV has been identified in theN=59 neutron-rich nucleus97Sr. Its properties lead to the [422] 3/2 Nilsson-orbital assignment for the band head. There is evidence for a second band with the head at 644.7 keV and the configuration [541] 3/2. Since the ground state and the lowest excited levels are spherical, shape coexistence is established for97Sr. A deformed nature of several levels at 500–600 keV results also from QRPA-model calculations. The structure of the low-lying spherical levels has been studied in the frame of the IBF model. The results of the present investigations lead to a better understanding of theN=59 isotones which constitute the link between the spherical and deformed nuclei atA∼100 as a species with shape coexistence but without any indications of particular softness.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01294286
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