Superdeformed triaxial band in 167Lu

How deformed are the TSD bands in odd Lu isotopes?

“…For reference also the yrast negative parity band is included in this figure. This band is well described by the [7,2] configuration at low spin and by [7,4] at high spin, i.e. we get a difference curve between experiment and calculations which decreases smoothly with increasing spin.…”

“…In a subsequent study [3], a similar band was identified in 165 Lu and these bands were interpreted as residing in a secondary minimum at 0.39 2 e » , 20 g »  . Somewhat later, a band with transition energies close to those in 163,165 Lu was observed in 167 Lu [4]. The special character of these rotational bands was then revealed when a second band interpreted as a wobbling excitation on the first band was identified in 163 Lu [5].…”

“…Note also that the number of particles in the low-j shells of the valence space, 4  = for protons and 5  = for neutrons, is fixed from the requirement that there are Z and N filled proton and neutron orbitals, respectively. As an example, the configurations in figure 1 are labelled [8,4] and [8(21), (22)6], respectively.…”

“…It was pointed out above that for 167 Lu, the TSD1 band interacts with a band with an odd 4  = proton at I 30 » and then it is also linked to these kind of bands at the decay-out. Such a band is labelled as [8,4] in CNS. The fact that the neutron hole configurations which are compared with the TSD1 band have one or two neutrons excited from 4  = to 6  = relative to the [8,4] valence space configurations gives support to the assumption that the TSD1 band should be assigned to one or the other of these neutron hole configurations.…”

Calculation of triaxial superdeformation in 174Hf

“…It has been reported that over 20 triaxial superdeformation bands were found in Lu, the typical element [6][7][8][9] . Many triaxial superdeformation bands have also been found in Hf isotopes--the neighbour of Lu: three in 168 Hf [10] , two in 170 Hf [11,12] , four in 174 Hf [13] , and two in 175 Hf [14] .…”