Evidence for the existence of two-phonon collective excitations in deformed nuclei

H. G. Börner, Institut Laue-Langevin
J. Jolie, Institut Laue-Langevin
S. J. Robinson, Institut Laue-Langevin
B. Krusche, Institut Laue-Langevin
R. Piepenbring, Institut Laue-Langevin
R. F. Casten, Institut Laue-Langevin
A. Aprahamian, Institut Laue-Langevin
J. P. Draayer, Institut Laue-Langevin

Abstract

For the first time, definite evidence for the existence of two-phonon collective states in deformed nuclei has been established through the measurement of the absolute transition rate for the decay of the double- K=4+ vibration in Er168. © 1991 The American Physical Society.