Rotational bands in 195, 197Tl

Identification of intruderπi13/2state in197Tl

“…Single gated γ-ray spectra from the γ-γ matrix are shown in figure 2. All γ transitions known from the previous work [2] have been confirmed in this work. An improved level scheme of 197 Tl is shown in figure 3.…”

“…It may be noted that the band B2 is very similar to the three quasi-particle band in 195 Tl [2] but with opposite parity. Total Routhian surface (TRS) calculations have been performed to study the deformation for the πh 9/2 (band B1) and the πi 13/2 configuration in 197 Tl using the Hartee-Fock-Bogoliubov code of Nazarewicz et al [9].…”

“…Rotational bands based on the intruder πh 9/2 and πi 13/2 levels with oblate and prolate deformations have been reported in the odd-A 189−193 Tl [1] nuclei. For the heavier 195,197 Tl isotopes, however, although the πh 9/2 bands are observed, no excited state corresponding to the intruder πi 13/2 orbital has been identified, so far [2]. In the present work, the γ-ray spectroscopy of 197 Tl has been studied in order to investigate the proton intruder states and the multi-quasiparticle states in this nucleus.…”

“…In the present work, the γ-ray spectroscopy of 197 Tl has been studied in order to investigate the proton intruder states and the multi-quasiparticle states in this nucleus. The excited states in 197 Tl were earlier studied in 1978 using two Ge(Li) detectors [2]. Channel No.…”

Particle-rotor model for doubly odd transitional nuclei of the Tl-region

“…Several rotational bands based on high-j uniqueparity quasiparticle (qp) states (ff h9/2, ~ h 11/2, ~ ix 3/2) have been reported in recent years in odd nuclei of the transitional region below the double shell closure at 2~ [1][2][3][4][5][6][7]. Hence, it is plausible to expect high spin structures, in the doubly odd nuclei built on intrinsic states just resulting from the vector addition of these qp excitations if the residual proton-neutron interaction does not obscures such a simple picture.…”