Population of0+States in Actinide andA≈190Nuclides by the (p,

0+states and collective bands in228Th studied by the (p,Levon1, Graw2, Hertenberger3 et al. 2013Phys. Rev. C269700View full textAdd to dashboardCite

“…Besides the interplay of collective and single-particle excitations, which takes place in deformed rare earth nuclei, the reflection asymmetry additionally complicates the picture of excitations. Already in an earlier publication [1], a conclusion was made that the nature of the first excited 0 + states in the actinide nuclei is different from that in the rare earth region, where they are due to the quadrupole vibration. The strong excitations in the (p,t)-reaction suggest that these states represent a collective excitation different from the β-vibration.…”

High-resolution study of excited0+states in200Hg and202Hg

“…6 we plot the energies of the firmly assigned 0 + excitations for + state two-nucleon transfer cross sections approaching or exceeding 15% of the ground-state cross section have signaled special structural effects such as phase transitional regions (Sm, Gd), shape coexistence, or special pairs modes (actinides) [11,[27][28][29][30][31]. For the Hg isotopes investigated, the strongest relative…”

Octupole correlations in positive-parity states of rare-earth and actinide nuclei

“…Previously, it had also been pointed out that the K π = 0 + 2 and K π = 0 + 3 states have very different structures, as indicated by their different E0 decay behavior to the ground-state band [18]. To test if the strong (p, t) population of the J π = 0 + 2 state [9,10] is in conflict with these observations and in particular with the doubleoctupole phonon structure, we have confronted the spd f IBM with our extended (p, t) data up to 3 MeV and also took a close look at the E0 and E1 decay behavior of the close-lying 0 + 2 and 0 + 3 states (ΔE = 230 keV) [13]. The comparison of the IBM predictions to the experimental data for the summed relative transfer strength σ i /σ gs is shown in Fig.…”

“…However, the nature of excited J π = 0 + states is a controversially discussed topic [6]. Especially in the actinides a pairing-isomeric character [7,8] was proposed because of the uniformly strong (p, t) population of the J π = 0 + 2 states [9,10], see Fig. 1, and the comparably weak (t, p) population observed for some nuclei [7].…”