Prolate and oblate rotational bands in <sup>136</sup>Sm
E S Paul; S Davis; P Vaska; P J Bishop; S A Forbes; D B Fossan; Y -J He; J R Hughes; I Jenkins; Y Liang; R Ma; M S Metcalfe; S M Mullins; P J Nolan; R J Poynter; P H Regan; R Wadsworth; N Xu; E S Paul; Oliver Lodge Lab., Liverpool Univ., UK; S Davis; Oliver Lodge Lab., Liverpool Univ., UK; P Vaska; Oliver Lodge Lab., Liverpool Univ., UK; P J Bishop; Oliver Lodge Lab., Liverpool Univ., UK; S A Forbes; Oliver Lodge Lab., Liverpool Univ., UK; D B Fossan; Oliver Lodge Lab., Liverpool Univ., UK; Y -J He; Oliver Lodge Lab., Liverpool Univ., UK; J R Hughes; Oliver Lodge Lab., Liverpool Univ., UK; I Jenkins; Oliver Lodge Lab., Liverpool Univ., UK; Y Liang; Oliver Lodge Lab., Liverpool Univ., UK; R Ma; Oliver Lodge Lab., Liverpool Univ., UK; M S Metcalfe; Oliver Lodge Lab., Liverpool Univ., UK; S M Mullins; Oliver Lodge Lab., Liverpool Univ., UK; P J Nolan; Oliver Lodge Lab., Liverpool Univ., UK; R J Poynter; Oliver Lodge Lab., Liverpool Univ., UK; P H Regan; Oliver Lodge Lab., Liverpool Univ., UK; R Wadsworth; Oliver Lodge Lab., Liverpool Univ., UK; N Xu; Oliver Lodge Lab., Liverpool Univ., UK
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
1993-06-01
Аннотация:
Six rotational bands have been established in <sup>136</sup>Sm following heavy-ion induced reactions carried out at the Nuclear Structure Facility, Daresbury. The yrast band has been observed up to I<sup>pi </sup>=(24<sup>+</sup>) and undergoes three band-crossings. A band was observed built on the low-lying 2<sup>+</sup> gamma-vibrational state, in addition to two negative parity sidebands built on two-quasiproton excitations. A dipole band showing the characteristics of collective oblate rotation was also established. The results are discussed in terms of total Routhian surface and cranked Woods-Saxon model calculations.
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