Shape coexistence and evolution inSr98

• DOI: 10.1103/physrevc.93.014315
• Publication Date: 2016-01-26T09:29:25Z
• Authors: J. Park; A. B. Garnsworthy; R. Krücken; C. Andreoiu; G. C. Ball; P. C. Bender; A. Chester; A. Close; P. Finlay; P. E. Garrett; J. Glister; G. Hackman; B. Hadinia; K. G. Leach; E. T. Rand; S. Sjue; K. Starosta; C. E. Svensson; E. Tardiff
• Keywords: 0103 physical sciences; 01 natural sciences

Shape coexistence between the strongly deformed ground state and weakly ${0}_{2}^{+}$ in $^{98}\mathrm{Sr}$ has been a major topic of interest due to energy difference 215 keV, which is smallest all even-even nuclei. The electric monopole transition strength ${\ensuremath{\rho}}^{2}(E0)$ an important quantity that can relate deformation shape mixing two ${0}^{+}$ states, are admixtures vibrational (S) rotational (D) states simple model. In $\ensuremath{\beta}$-decay spectroscopy experiment, experimental was measured. A value 0.053(5) consistent with previous measurement combined known quadrupole strengths $B(E2)$ calculations two-state Based on systematic study neighboring Kr, Zr, Mo isotopes, ${2}^{+}$ determined be 8.6% 1.3%, respectively, corresponding parameters ${\ensuremath{\beta}}_{\text{D}}=0.38(1)$ ${\ensuremath{\beta}}_{\text{S}}=\ensuremath{-}0.23(2)$. These reproduce well except for ${4}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+}$ transition, suggests smaller D-band $J\ensuremath{\ge}4$.