Eur. Phys. J. A (2005) 25: 467-468
https://doi.org/10.1140/epjad/i2005-06-181-2

ENAM 2004

Identification of levels in ^{162, 164}Gd and decrease in moment of inertia between N = 98-100

¹ Department of Physics, Vanderbilt University, 37235, Nashville, TN, USA
² Department of Physics, University of Coimbra, 3000, Coimbra, Portugal

^* e-mail: elizabethfj@earthlink.net

Received: 16 December 2004
Accepted: 6 May 2005
Published online: 11 August 2005

Abstract

From prompt γ-γ-γ coincidence studies with a ²⁵²Cf source, the yrast levels were identified from 2⁺ to 16⁺ and 14⁺ in neutron-rich ^162,164Gd, respectively. Transition energies between the same spin states are higher and moments of inertia lower at every level in N = 100 ¹⁶⁴Gd than in N = 98 ¹⁶²Gd. These observations are in contrast to the continuous decrease in the 2⁺ energy to a minimum at neutron midshell (N = 104) in Er, Yb, and Hf nuclei.