Abstract
In the present study, B( E2; 2(+)-> 0(+) ) values have been measured in the Rn-208 and Po-206 nuclei through Coulomb excitation of re-accelerated radioactive beams in inverse kinematics at CERN-ISOLDE. The resulting B(E2; 2(+)-> 0(+)) in 208Rn is similar to 0.08 e(2)b(2). These nuclei lie in, or at the boundary of the region where seniority scheme should persist. However, contributions from collective excitations may be present when moving away from the N = 126 shell closure. To date, surprisingly little is known of the transition probabilities between the low-spin states in this region.
Highlights
IntroductionB(E2) values, give precise information of the collectivity and its development in atomic nuclei as a function of N and Z
Reduced transition probabilities, B(E2) values, give precise information of the collectivity and its development in atomic nuclei as a function of N and Z
B(E2; 2+ → 0+) values have been measured in the 208Rn and 206Po nuclei through Coulomb excitation of re-accelerated radioactive beams in inverse kinematics at CERN-ISOLDE
Summary
B(E2) values, give precise information of the collectivity and its development in atomic nuclei as a function of N and Z. The level pattern develops from a well pronounced seniority ν = 2 level structure of the 2+ and 4+ states in 204Pb into a more evenly spaced levels when approaching 210Rn. The isomeric nature of the Iπ = 8+ states is characterised by the low energy of the 8+ → 6+ transition. [4], shell-model calculations with empirical one- and two-body interactions have been carried for 208Rn. The calculations predict that the 8+ state would be a pure ν = 2 proton h9/2 state, which is consistent with the. The calculations predict that the 8+ state would be a pure ν = 2 proton h9/2 state, which is consistent with the
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