Eur. Phys. J. A 10, 245-248
Signature inversion in structure in 178IrD. Hojman1, 2, 3, M.A. Cardona1, 3, D.R. Napoli4, S.M. Lenzi5, C.A. Ur5, G. Lo Bianco6, C.M. Petrache6, M. Axiotis4, D. Bazzacco5, J. Davidson2, 7, M. Davidson2, 7, M. De Poli4, G. de Angelis4, E. Farnea4, T. Kroell5, S. Lunardi5, N. Marginean4, T. Martínez4, R. Menegazzo5, B. Quintana5 and C. Rossi Alvarez5
1 Departamento de Física, CNEA, Buenos Aires, Argentina
2 CONICET, Argentina
3 Universidad Nacional de General San Martín, Argentina
4 INFN, Laboratori Nazionali di Legnaro, Italy
5 Dipartimento di Física and INFN, Padova, Italy
6 Dipartimento di Matematica e Fisica, Università di Camerino, Italy
7 Departamento de Física, Universidad de Buenos Aires, Argentina
(Received: 13 December 2000 / Revised version: 13 March 2001 Communicated by D. Schwalm)
High-spin states in 178Ir were investigated by means of in-beam -ray spectroscopy techniques using the multidetector array GASP. Excited states of 178Ir were populated through the 159Tb(24Mg, 5n) fusion-evaporation reaction at MeV. Several rotational bands were observed. Among them, the structure has been identified up to spin 36 . This band exhibits an anomalous signature splitting and a signature inversion around spin 25 .
21.10.Re - Collective levels.
23.20.Lv - transitons and level energies.
27.70.+q - .
© Società Italiana di Fisica, Springer-Verlag 2001