Band structures in 118, 120Te

Collective and noncollective states in120Te

“…The level scheme of 120 Te, based on the present results and on previous work [26,27], is shown in Fig 1. Gammaray transition energies, intensities, angular distribution ratios, deduced multipolarities and spin-parity assignments are listed in Table I. For the spin and parity assignments it was assumed that stretched quadrupole transitions are of E2 character (rather than M 2 transitions, which are strongly hindered).…”

“…Spin and parity assignments to states in the lower part of the level scheme were adopted from previous work [26,27]. In the present work, higher-spin states, new side-feeding branches, and crossover transitions were added.…”

“…The low-energy part of the level scheme was investigated previously [26,27]. Therefore, in the following, only the new medium-spin structures and the five high-spin rotational bands are discussed.…”

Nuclear structure and β -decay schemes for Te nuclides beyond N=82

“…Below N = 82, Te isotopes exhibit typical vibrational character, where co-existing single-particle and collective structures are manifest. [9][10][11][12][13][14][15]. This vibrational character is still present in 136 Te, N = 84 [16], however, the reduction of the energy of its 2 + state in comparison to the N < 82 isotopes, as shown in Fig.…”

“…As a result, the energy ratios show a symmetric pattern in Te isotopes with the same valence neutron holes and particles with respect to N = 82. Here we address the following questions; whether, or not the first 2 + level energy decreases continuously at N = 88 as it does between N = 84 (607 keV) and at N = 86 (401 keV), and how does the value of E(4 + Sb, were produced by the in-flight fission of a 345 MeV per nucleon 238 U beam on a 9 Be target and selected by the first stage of the BigRIPS separator [25]. The mean intensity of the primary beam was 5 to 7 pnA over the course of the five days of beam time.…”