High-resolution study of 0{sup +} and 2{sup +} excitations in {sup 168}Er with the (p,t) reaction

Journal Article · Thu Jun 15 04:00:00 EDT 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.064309· OSTI ID:20771585

Bucurescu, D ^[1]; Graw, G; Hertenberger, R ^[2]; Wirth, H -F; Faestermann, T; Kruecken, R; Mahgoub, M ^[3]; Lo Iudice, N ^[4]; Sushkov, A V; Shirikova, N Yu ^[5]; Sun, Y ^[6]; Jolie, J; Brentano, P von; Braun, N; Heinze, S; Moeller, O; Muecher, D; Scholl, C ^[7]; Casten, R F; Meyer, D A ^[8]

---

1. Horia Hulubei National Institute of Physics and Nuclear Engineering, P.O. Box MG-6, R-76900 Bucharest (Romania)
2. Sektion Physik, Ludwig Maximilians Universitaet Muenchen, Am Coulombwall 1, D-85748 Garching (Germany)
3. Physik Department, Technische Universitaet Muenchen, D-85748 Garching (Germany)
4. Dipartimento di Scienze Fisiche, Universita di Napoli 'Federico II' and Istituto Nazionale di Fisica Nucleare, Monte S Angelo, Via Cintia I-80126 Naples (Italy)
5. Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation)
6. Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
7. Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany)
8. 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, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 73; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
CORRELATIONS
DEFORMED NUCLEI
ENERGY RESOLUTION
ERBIUM 168
EXCITATION
EXCITED STATES
MEV RANGE
NUCLEAR STRUCTURE
PROTON REACTIONS
QUASIPARTICLE-PHONON MODEL
SHELL MODELS
TRITONS
WAVE FUNCTIONS