Rotational band structures in <sup>129</sup>La
Y He; M J Godfrey; J Jenkins; A J Kirwan; S M Mullins; P J Nolan; E S Paul; R Wadsworth; Y He; Oliver Lodge Lab., Liverpool Univ., UK; M J Godfrey; Oliver Lodge Lab., Liverpool Univ., UK; J Jenkins; Oliver Lodge Lab., Liverpool Univ., UK; A J Kirwan; Oliver Lodge Lab., Liverpool Univ., UK; S M Mullins; Oliver Lodge Lab., Liverpool Univ., UK; P J Nolan; Oliver Lodge Lab., Liverpool Univ., UK; E S Paul; Oliver Lodge Lab., Liverpool Univ., UK; R Wadsworth; Oliver Lodge Lab., Liverpool Univ., UK
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
1992-01-01
Аннотация:
High spin states in the odd proton nucleus <sup>129</sup>La have been investigated using the techniques of in-beam gamma -ray spectroscopy. Nine rotational bands have been observed in <sup>129</sup>La, seven for the first time. Various band crossings were observed at rotational frequencies in the range h(cross) omega =0.28-0.57 MeV. The data are mainly discussed within the framework of the cranked shell model. The rotational bands are assigned quasiparticle configurations originating from pi h<sub>11/2</sub>, pi g<sub>7/2</sub>, pi (h<sub>11/2</sub>)<sup>2</sup>(X) pi g<sub>7/2</sub> and pi <sub>11/2</sub> (X) nu (h<sub>11/2</sub>g<sub>7/2</sub>) states, respectively. Four of the band crossings are thought to be associated with the rotational alignments of the first pair of h<sub>11/2</sub> neutrons or protons.
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