Eur. Phys. J. A (2005) 25: 469-470
https://doi.org/10.1140/epjad/i2005-06-044-x

ENAM 2004

Shape transitions and triaxiality in neutron-rich odd-mass Y and Nb isotopes

¹ Physics Department, Vanderbilt University, 37235, Nashville, TN, USA
² Nuclear Science Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA
³ Institut für Kernphysik, Universität zu Köln, 50937, Köln, Germany
⁴ Department of Physics, Tsinghua University, 100084, Beijing, PRC
⁵ Department of Physics, Mississippi State University, 39762, MS, USA
⁶ Flerov Laboratory for Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, Russia
⁷ Lawrence Livermore National Laboratory, 94550, Livermore, CA, USA
⁸ Universidade Federal do Rio de Janeiro, CP 68528, RG, Brazil

^* e-mail: yxluo@lbl.gov

Received: 15 October 2004
Accepted: 18 February 2005
Published online: 3 May 2005

Abstract

New level schemes of ^{99, 101}Y and ^{101, 105}Nd are established based on the measurement of prompt γ-rays from the fission of ²⁵²Cf at Gammasphere. Triaxial-rotor-plus-particle model calculations and fitting suggest that in the A ≈ 100 neutron-rich nuclei triaxial shape is prevalent in the region with Z > 41.