Multiple band structures inGe68

Particle alignments and shape change inGe66andGe68Hasegawa1, Kaneko2, Mizusaki3 2005Phys. Rev. C150170View full textAdd to dashboardCite

“…This is consistent with the result of the VAMPIR calculation, but contradicts the result of the particle-rotor model [8] in which the 8 + 3 state is identified as the continuation of the gs band. We note again …”

“…The Ge isotopes 66 Ge and 68 Ge have been studied intensively in experiments ( [1,2,3,4,5,6] for 66 Ge and [7,8,9,10,11] for 68 Ge) and in theoretical investigations [6,9,11,12,13,14,15,16,17,18] for many years. A thorough theoretical investigation was carried out by Petrovici et al with the excited VAMPIR (variation after mean field projection in realistic model spaces) method for 68 Ge [9,13,14,15].…”

Observation of aγband based on a two-quasiparticle configuration inGe70

“…An important observation in the present work is identification of a new band structure B2 which arises from forking of the ground state band at 6 + state. Such band structures with forking have also been observed earlier in neighboring nuclei 66−68 Ge [25][26][27][28]. The band B2 is extended to 20 with the addition of five new γ-transitions of energies 1240, 840, 626, 1178 and 846 keV above the 5538 keV state.…”

“…The amplitudes of the wavefunctions of two aligned Theo. The nature of observed quasiparticle alignments and band structures in 70 Ge is quite similar to its neighboring isotope 68 Ge [26][27][28], in which the ground state band forks beyond I = 8 + into multiple band structures. To have an insight of the nature of observed alignments and forking band structures in 68 Ge, we have performed the TPSM calculations for 68 Ge with deformation parameters of ǫ = 0.22 and ǫ ′ = 0.16.…”

Collectivity in66Ge and68Ge via lifetime measurements

“…where v is the recoil velocity, x is the target to stopper distance and I [12], 2.6(3) ps [11], all from singles measurements using RDDS. In addition, there has been a precise measurement by Ref.…”