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

Journal Article · Wed Aug 15 04:00:00 EDT 2007 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778807080030· OSTI ID:21075758

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

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1. Yale University, Wright Nuclear Structure Laboratory (United States)
2. Ludwig Maximilians Universitaet Muenchen, Sektion Physik (Germany)
3. Universitaet zu Koeln, Institut fuer Kernphysik (Germany)
4. Technische Universitaet Muenchen, Physik Department (Germany)
5. Universita di Napoli Federico II and Istituto Nazionale di Fisica Nucleare, Dipartimento di Scienze Fisiche (Italy)
6. Joint Institute for Nuclear Research, Laboratory of Information Technologies (Russian Federation)
7. University of Notre Dame, Department of Physics and Joint Institute for Nuclear Astrophysics (United States)
8. Joint Institute for Nuclear Research, Bogolyubov Laboratory of Theoretical Physics (Russian Federation)

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 large number of excited 0{sup +} states (25) and 2{sup +} states (64) have been assigned up to 4.0-MeV excitation energy. This allows detailed investigations along two directions of current interest: first, an extension of microscopic model interpretations into the region of medium level density above the pairing gap; second, a first analysis of the statistical fluctuation (order/chaos) properties of pure sequences of levels, in one deformed nucleus. Predictions of two models (the quasiparticle-phonon model and the projected shell model) are compared to the data, and it is concluded that, in both cases, mixing of more configurations is required in the wave functions.

• OSTI ID: 21075758
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 8 Vol. 70; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHAOS THEORY
CONFIGURATION
CURRENTS
DEFORMED NUCLEI
ENERGY RESOLUTION
ENERGY-LEVEL DENSITY
ERBIUM 168
EXCITATION
EXCITED STATES
FLUCTUATIONS
FORECASTING
MEV RANGE 01-10
MIXING
QUASIPARTICLE-PHONON MODEL
SHELL MODELS
WAVE FUNCTIONS