Options
2008
Journal Article
Titel
Investigation of lifetimes in quadrupole bands of 142Gd
Abstract
For a level scheme investigation of 142Gd an experiment with the gamma-spectrometer EUROBALL III has been carried out and lifetimes have been measured with EUROBALL IV using the Doppler-shift attenuation method. The high-spin states have been populated in these experiments by means of the 99Ru(48Ti, 2p3n) reaction at a beam energy of 240 MeV and the 114Sn(32S, 2p2n) reaction at 160 MeV, respectively. Reduced E2 transition probabilities B(E2) were determined for 15 members of four quadrupole bands. For the interpretation of the positive-parity even-spin quadrupole bands, calculations in the cranked Nilsson-Strutinsky as well as interacting boson models have been performed. From the former calculations it was concluded that the high-spin states of the (+ , 0)1 band in 142Gd represent a triaxial nucleus rotating around the longest principal axis.
Author(s)
Lieder, E.O.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / iThemba LABS, Somerset West, South Africa / A.F. Ioffe Physical Technical Insitute RAS, St. Petersburg, Russia
Pasternak, A.A.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / A.F. Ioffe Physical Technical Instiute RAS, St. Petersburg, Russia
Lieder, R.M.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / iThemba LABS, Somerset West, South Africa
Venkova, T.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / Bulgarian Academy of Sciences, Institute of Nuclear Research and Nuclear Energy, Sofia, Bulgaria
Morek, T.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / University of Warsaw, Institute of Experimental Physics, Warszawa, Poland
Angelis, G. de
Laboratori Nazionali di Legnaro, Istituto Nazionale de Fisica Nucleare, Legnaro, Italy
Bazzacco, D.
Dipartimento di Fisica dell'Universita and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova, Italy
Menegazzo, R.
Dipartimento di Fisica dell'Universita and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova, Italy
Lunardi, S.
Dipartimento di Fisica dell'Universita and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova, Italy