Five new 2+ levels have been established in the semimagic Po210 nucleus from a 208Pb(12C, 10Be) two-proton transfer experiment, performed at energies close to the Coulomb barrier at JAEA Tokai. A setup combining Ge, LaBr3, and Si telescopes was used to detect both in-beam γ rays and ejectile residues. The new 2+ states have been established by means of the transitions toward the 0+ ground state which are present in the γ spectra produced by properly selecting the excitation energy in Po210 after kinematical reconstruction. (f7/2)2, h9/2 ⊗ - f5/2, (i13/2)2, f7/2 ⊗ - p3/2, and f7/2 ⊗ - f5/2 two-proton configurations are assigned to these states. In addition, a new 3- level has also been established in this nucleus, very likely originating from the f7/2 ⊗ - i13/2 configuration. Shell-model calculations strongly support these assignments. .
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics