Six superdeformed (SD) bands have been observed in the nucleus 148Gd using the γ-spectrometer GASP. The structure of the observed SD bands is discussed within the concept of cranked-Strutinsky-type calculations including pairing interaction. For the configuration assignments two different parametrizations of the Woods-Saxon potential are compared. Five of the observed SD bands are described in terms of quasiparticle configurations, whereas one is suggested to have vibrational-like structure. From this data a ΔI=2 staggering in the rotational spectrum of the yrast SD band also has been observed.
Spectroscopy in the second well of the Gd148 nucleus: Two quasiparticle and collective excitations
LUNARDI, SANTO;
1996
Abstract
Six superdeformed (SD) bands have been observed in the nucleus 148Gd using the γ-spectrometer GASP. The structure of the observed SD bands is discussed within the concept of cranked-Strutinsky-type calculations including pairing interaction. For the configuration assignments two different parametrizations of the Woods-Saxon potential are compared. Five of the observed SD bands are described in terms of quasiparticle configurations, whereas one is suggested to have vibrational-like structure. From this data a ΔI=2 staggering in the rotational spectrum of the yrast SD band also has been observed.
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