γ-ray spectroscopy of Ta163

M. Sandzelius, B. Cederwall, E. Ganioǧlu, J. Thomson, K. Andgren, L. Bianco, T. Bäck, S. Eeckhaudt, S. Ertürk, M. B.Gomez Hornillos, T. Grahn, P. T. Greenlees, B. Hadinia, A. Johnson, P. M. Jones, D. T. Joss, R. Julin, S. Juutinen, S. Ketelhut, A. KhaplanovM. Leino, M. Nyman, R. D. Page, P. Rahkila, J. Sarén, C. Scholey, J. Simpson, J. Sorri, J. Uusitalo, R. Wyss

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Excited states in Ta163 have been identified for the first time using the Cd106(Ni60,3p) fusion evaporation reaction. γ rays were detected using the JUROGAM γ-ray spectrometer and recoil discrimination was achieved using the recoil ion transport unit (RITU) gas-filled separator in conjunction with the GREAT spectrometer situated at the focal plane of the RITU. The yrast states are assigned to a strongly coupled rotational band based on a πh11/2 configuration. This structure exhibits large signature splitting at low spins that disappears after the paired band crossing because of the alignment of a pair of i13/2 neutrons. This effect is ascribed to triaxial shape changes induced by the core-polarizing properties of the deformation-aligned h11/2 proton and the rotation-aligned i13/2 neutrons. Two additional strongly coupled band structures have been established and are discussed in terms of octupole-vibrational and two-quasiparticle excitations built on the yrast structure. The experimental results are compared with predictions from cranked-shell-model and total-Routhian-surface calculations.

Original languageEnglish
Article number054316
JournalPhysical Review C - Nuclear Physics
Volume80
Issue number5
DOIs
StatePublished - Nov 25 2009
Externally publishedYes

Fingerprint

Dive into the research topics of 'γ-ray spectroscopy of Ta163'. Together they form a unique fingerprint.

Cite this