The spectroscopy of <sup>161,162</sup>ER at spins up to 50ℏ in the unpaired regime
M A Riley; J W Roberts; J Simpson; A Alderson; I Ali; M A Bentley; A M Bruce; R Chapman; D M Cullen; P Fallon; P D Forsyth; J C Lisle; J N Mo; J F Sharpey-Schafer; M A Riley; Oliver Lodge Lab., Liverpool Univ., UK; J W Roberts; Oliver Lodge Lab., Liverpool Univ., UK; J Simpson; Oliver Lodge Lab., Liverpool Univ., UK; A Alderson; Oliver Lodge Lab., Liverpool Univ., UK; I Ali; Oliver Lodge Lab., Liverpool Univ., UK; M A Bentley; Oliver Lodge Lab., Liverpool Univ., UK; A M Bruce; Oliver Lodge Lab., Liverpool Univ., UK; R Chapman; Oliver Lodge Lab., Liverpool Univ., UK; D M Cullen; Oliver Lodge Lab., Liverpool Univ., UK; P Fallon; Oliver Lodge Lab., Liverpool Univ., UK; P D Forsyth; Oliver Lodge Lab., Liverpool Univ., UK; J C Lisle; Oliver Lodge Lab., Liverpool Univ., UK; J N Mo; Oliver Lodge Lab., Liverpool Univ., UK; J F Sharpey-Schafer; Oliver Lodge Lab., Liverpool Univ., UK
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
1990-03-01
Аннотация:
High spin states in <sup>161</sup>Er and <sup>162</sup>Er have been populated using the <sup>130</sup>Te+<sup>36</sup>S reaction at a <sup>36</sup>S bombarding energy of 170 MeV. In <sup>161</sup>Er, three rotational bands were extended from I approximately=35 h(cross) to I approximately=50 h(cross). In <sup>162</sup>Er the lowest energy positive parity band was observed to I=44 h(cross) and two negative parity bands to I approximately=32 h(cross). The behaviour of these rotational sequences are explained in terms of the expected spectrum of single neutron states in the absence of static neutron pair correlations.
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