Coulomb excitation of 102 Ru with 12 C and 16 O
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
The Coulomb excitation of 102Ru was performed with beams of 12C and 16O ions. The beam particles
scattered at forward angles were momentum analyzed with a magnetic spectrograph. The resolution achieved
enabled the populations of the 2+
1 state, the unresolved 2+
2 /4+
1 , and 2+
4 /3−
1 , doublets of states, and the 3−
2
state to be determined as a function of the scattering angle. These populations are compared with GOSIA
calculations, yielding B(E2; 2+
1 → 0+
1 ) = 41.5 ± 2.3 W.u., B(E2; 2+
2 → 0+
1 ) = 1.75 ± 0.11 W.u., B(E3; 3−
1 →
0+
1 ) = 31.5 ± 3.5 W.u., and B(E3; 3−
2 → 0+
1 ) = 6.8 ± 0.5 W.u. The B(E3; 3−
1 → 0+
1 ) value is significantly
larger than previously measured. The weakly populated 2+
3 state, presumed to be a member of the band built
on the 0+
2 state, was observed clearly for a single angle only, and a fit to its population results in B(E2; 2+
3 →
0+
1 ) = 0.053 ± 0.011 W.u. Using the known γ -ray branching ratios for the 2+
3 level, the B(E2; 2+
3 → 0+
2 ) value
is calculated to be 18 ± 4 W.u., substantially less than the B(E2; 2+
1 → 0+
1 ). This suggests that the deformation
of the 0+
2 state is lower than that of the 0+
1 state. The results are compared with beyond-mean-field calculations
with the Gogny-D1S interaction using the symmetry-conserving configuration-mixing method.
Description
Keywords
Astronomy, Physics, Cosmology, Dark energy, Astrophysics
Citation
Garrett, P. E. et al. (2022). Coulomb excitation of 102 Ru with 12 C and 16 O. Physical Review C, 106, 064307. https://doi.org/10.1103/PhysRevC.106.064307