High-resolution study of 0{sup +} and 2{sup +} excitations in {sup 168}Er with the (p,t) reaction
- Horia Hulubei National Institute of Physics and Nuclear Engineering, P.O. Box MG-6, R-76900 Bucharest (Romania)
- Sektion Physik, Ludwig Maximilians Universitaet Muenchen, Am Coulombwall 1, D-85748 Garching (Germany)
- Physik Department, Technische Universitaet Muenchen, D-85748 Garching (Germany)
- Dipartimento di Scienze Fisiche, Universita di Napoli 'Federico II' and Istituto Nazionale di Fisica Nucleare, Monte S Angelo, Via Cintia I-80126 Naples (Italy)
- Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation)
- Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
- Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany)
- Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8124 (United States)
Excited states in the deformed nucleus {sup 168}Er have been studied with high-energy resolution, in the (p,t) reaction, with the Munich Q3D spectrograph. A number of 25 excited 0{sup +} states (four tentative) and 63 2{sup +} states have been assigned up to 4.0 MeV excitation energy. This unusually rich characterization of the 0{sup +} and 2{sup +} states in a deformed nucleus, close to a complete level scheme, offers a unique opportunity to check, in detail, models of nuclear structure that incorporate many excitation modes. A comparison of the experimental data is made with two such models: the quasiparticle-phonon model (QPM), and the projected shell model (PSM). The PSM wave functions appear to contain fewer correlations than those of the QPM and than required by the data.
- OSTI ID:
- 20771585
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 73, Issue 6; Other Information: DOI: 10.1103/PhysRevC.73.064309; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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