Observation of three-quasiparticle structures in the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>N</mi><mo>=</mo><mn>88</mn><mn></mn></math></span> nucleus <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>153</mn></mrow></msup></mrow><mi mathvariant="normal">Tb</mi></math></span>

D. J. Hartley; T. B. Brown; F. G. Kondev; R. W. Laird; J. Pfohl; A. M. Richmond; M. A. Riley; J. Döring; J. Simpson

doi:10.1103/PhysRevC.58.1321

Observation of three-quasiparticle structures in the $N = 88$ nucleus $^{153} Tb$

D. J. Hartley, T. B. Brown, F. G. Kondev, R. W. Laird, J. Pfohl, A. M. Richmond, M. A. Riley, J. Döring, and J. Simpson

Phys. Rev. C 58, 1321 – Published 1 August 1998

Abstract

High-spin states of $^{153} Tb$ were populated via the reaction $^{139} {L a (}^{18} O, 4 n)$ at a beam energy of 100 MeV. Previously known bands have been extended beyond the region of the first $i_{13 / 2}$ neutron alignment and two new structures have been identified. The rotational alignment behavior of the $π h_{11 / 2}$ and new bands are discussed. Quasiparticle assignments are suggested for the latter. $B (M 1) / B (E 2)$ ratios were extracted and compared to theoretical calculations.