Coulomb excitation of 102Ru with 12C and 16O

Garrett, P. E.; Zielinska, M.; Bergmaier, A.; Rodriguez, T. R.; Kalaydjieva, D.; Siciliano, M.; Bidaman, H.; Bildstein, V.; Burbadge, C.; Varela, A. Diaz; Doherty, D. T.; Faestermann, T.; Hadynska-Klek, K.; Hertenberger, R.; Keeley, N.; Laffoley, A.; MacLean, A. D.; Mahgoub, M.; Radich, A. J.; Rocchini, M.; Spagnoletti, P.; Triambak, S.; Vandebrouck, M. und Wrzosek-Lipska, K. (2022): Coulomb excitation of 102Ru with 12C and 16O. In: Physical Review C, Bd. 106, Nr. 6, 64307

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 gamma-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.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 2469-9985
• Sprache: Englisch