Saturation of deformation atN=60 in the Sr isotopes

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 01 Jun 1990 English Publisher:Springer Science and Business Media LLCJournal:Zeitschrift f�r Physik A Atomic Nuclei, volume 337, pages 143-148 (issn: 0930-1151, eissn: 1434-601X,

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Authors: G. Lhersonneau; H. Gabelmann; N. Kaffrell; K. -L. Kratz; B. Pfeiffer; K. Heyde;

doi: 10.1007/bf01294285

Saturation of deformation atN=60 in the Sr isotopes

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Abstract

From the halflife oft 1/2=3.91 (16) ns for the 21 + state in100Sr a deformation parameter ofβ=0.40(1) has been derived. Within the given uncertainties, this value is equal to the recently determinedβ-parameters for98Sr and99Sr, indicating that in the Sr isotopes saturation of deformation is reached immediately at its onset well before neutron midshell. This behaviour is reflected by the “twin” character of98Sr and100Sr with identical features of their unperturbed ground-state rotational bands. These observations are discussed in terms of strong two-nucleon interactions.

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