Eur. Phys. J. A 14, 439-449 (2002)
DOI: 10.1140/epja/i2002-10026-8

Spectroscopy of the deformed nucleus

C.M. Petrache¹, G. Lo Bianco¹, P.G. Bizzeti², A.M. Bizzeti-Sona², D. Bazzacco³, S. Lunardi³, M. Nespolo³, G. de Angelis⁴, P. Spolaore⁴, N. Blasi⁵, S. Brant⁶, V. Krstic⁶ and D. Vretenar<sup>6

1</sup>  Dipartimento di Fisica, Università di Camerino and INFN, Sezione di Perugia, Italy
²  Dipartimento di Fisica and INFN, Sezione di Firenze, Firenze, Italy
³  Dipartimento di Fisica and INFN, Sezione di Padova, Padova, Italy
⁴  INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy
⁵  INFN, Sezione di Milano, Milano, Italy
⁶  Department of Physics, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia

petrache@sunlb1.unicam.it

(Received: 19 February 2002 / Revised version: 22 March 2002 Communicated by C. Signorini)

Abstract
The odd-even nucleus ¹²⁵Ce was studied via in-beam -ray spectroscopy using the reaction at 190 MeV. Four rotational bands were observed, two of them being identified for the first time. New connecting transitions were identified between the bands, which leads to new spin assignment for one of the previously known bands. We propose J=7/2^- for the ground state of ¹²⁵Ce. The bands are discussed in the framework of the -pairs model.

PACS
23.20.Lv - Gamma transitions and level energies.
21.10.Re - Collective levels.
21.60.Ev - Collective models.
27.60.+j - .

© Società Italiana di Fisica, Springer-Verlag 2002