Details

Autor(en) / Beteiligte

• Hartley, D. J.
• Riedinger, L. L.
• Janssens, R. V. F.
• Majola, S. N. T.
• Riley, M. A.
• Allmond, J. M.
• Beausang, C. W.
• Carpenter, M. P.
• Chiara, C. J.
• Cooper, N.
• Curien, D.
• Gall, B. J. P.
• Garrett, P. E.
• Kondev, F. G.
• Kulp, W. D.
• Lauritsen, T.
• McCutchan, E. A.
• Miller, D.
• Miller, S.
• Piot, J.
• Redon, N.
• Sharpey-Schafer, J. F.
• Simpson, J.
• Stefanescu, I.
• Wang, X.
• Werner, V.
• Wood, J. L.
• Yu, C. -H.
• Zhu, S.
• Dudek, J.

Titel

Investigation of negative-parity states in Dy156 : Search for evidence of tetrahedral symmetry

Ist Teil von

• Physical review. C, 2017-01, Vol.95 (1)

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• An experiment populating low/medium-spin states in 156 Dy was performed to investigate the possibility of tetrahedral symmetry in this nucleus. In particular, focus was placed on the low-spin, negative-parity states since recent theoretical studies suggest that these may be good candidates for this high-rank symmetry. The states were produced in the 148 Nd ( 12 C , 4 n ) reaction and the Gammasphere array was utilized to detect the emitted γ rays. B ( E 2 ) / B ( E 1 ) ratios of transition probabilities from the low-spin, negative-parity bands were determined and used to interpret whether these structures are best associated with tetrahedral symmetry or, as previously assigned, to octupole vibrations. In addition, several other negative-parity structures were observed to higher spin and two new sequences were established.