Three consecutive Coulomb excitation experiments were performed to measure the reduced transition probabilities in 120,122,124 Te by using a 58 Ni beam. For 120 Te the collectivity was remeasured with high precision yielding a B(E2; 0 + g.s. → 2 + 1 ) value of 0.666 (20) e 2 b 2 . From the B(E2) values connecting higher-lying states, the nuclear structure of 120,122,124 Te was determined and shows a rotational behavior quite in contrast with the vibrational structure of the level schemes. The data are compared with different models.
High spin states in 135 La have been investigated using the 128 Te( 11 B,4n) 135 La reaction at a beam energy of 50.5 MeV using the Indian National Gamma Array (INGA). The level scheme has been confirmed and extended both for low and high spin states with the observation of several new transitions. The Directional Correlations of Oriented states (DCO) ratios and linear polarization measurements have been performed to assign spin-parity for most of the reported γ transitions. A new positive parity band has been observed and identified as a decoupled band ( I = 2). Two negative parity dipole bands ( I = 1) have been established and for one of the dipole bands the crossover E2 transitions have been identified for the first time. On the basis of the Tilted Axis Cranking (TAC) calculations, a three quasiparticle (qp) π (h 11/2 ) 1 ⊗ ν(h 11/2 ) −2 configuration and 5qp π (h 11/2 ) 1 (g 7/2 /d 5/2 ) 2 ⊗ ν(h 11/2 ) −2 configuration have been assigned to these two dipole bands. The comparison with experimental observables supports the configuration assignments for both the dipole bands.
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