Alignments, additivity, and signature inversion in odd-odd ¹⁷⁰Ta: a comprehensive high-spin study

TY - JOUR

T1 - Alignments, additivity, and signature inversion in odd-odd 170Ta

T2 - a comprehensive high-spin study

AU - Aguilar, A.

AU - Hartley, D. J.

AU - Riley, M. A.

AU - Teal, C.

AU - Carpenter, MP

AU - Hagemann, Gudrun Bertram

AU - Sletten, Geirr

PY - 2010/6/21

Y1 - 2010/6/21

N2 - High-spin states (I 50) of the odd-odd nucleus Ta170 have been investigated with the Sn124(51V,5n) reaction. The resolving power of Gammasphere has allowed for the observation of eleven rotational bands (eight of which are new) and over 430 transitions (~350 of which are new) in this nucleus. Many interband transitions have been observed such that the relative spins and excitation energies of the 11 bands have been established. This is an unusual circumstance in an odd-odd study. Configurations have been assigned to most of these bands based upon features such as alignment properties, band crossings, B(M1)/B(E2) ratios, and the additivity of Routhians. A systematic study of the frequency at which normal signature ordering occurs in the πh9/2νi13/2 band has been performed and it is found that its trend is opposite to that observed in the πh11/2νi13/2 bands. A possible interpretation of these trends is discussed based on a proton-neutron interaction.

AB - High-spin states (I 50) of the odd-odd nucleus Ta170 have been investigated with the Sn124(51V,5n) reaction. The resolving power of Gammasphere has allowed for the observation of eleven rotational bands (eight of which are new) and over 430 transitions (~350 of which are new) in this nucleus. Many interband transitions have been observed such that the relative spins and excitation energies of the 11 bands have been established. This is an unusual circumstance in an odd-odd study. Configurations have been assigned to most of these bands based upon features such as alignment properties, band crossings, B(M1)/B(E2) ratios, and the additivity of Routhians. A systematic study of the frequency at which normal signature ordering occurs in the πh9/2νi13/2 band has been performed and it is found that its trend is opposite to that observed in the πh11/2νi13/2 bands. A possible interpretation of these trends is discussed based on a proton-neutron interaction.

U2 - 10.1103/physrevc.81.064317

DO - 10.1103/physrevc.81.064317

M3 - Journal article

SN - 2469-9985

VL - 81

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 064317

ER -