Origin of Low-Energy Quadrupole Collectivity in Vibrational Nuclei

Journal Article · Fri Feb 11 00:00:00 EST 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.062501· OSTI ID:21532296

Walz, C; Krugmann, A; Neumann-Cosel, P von; Pietralla, N; Ponomarev, V Yu; Scheikh-Obeid, A ^[1]; Fujita, H ^[2]; Wambach, J ^[1]

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1. Institut fuer Kernphysik, Technische Universitaet Darmstadt, 64289 Darmstadt (Germany)
2. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)

The coupling of the giant quadrupole resonance to valence-space configurations is shown to be the origin of the formation of low-lying quadrupole-collective structures in vibrational nuclei with symmetric and mixed-symmetric character with respect to the proton-neutron degree of freedom. For the first time experimental evidence for this picture is obtained from electron- and proton scattering experiments on the nucleus {sup 92}Zr that are sensitive to the relative phase of valence-space amplitudes by quantum interference.

• OSTI ID: 21532296
• Journal Information: Physical Review Letters, Vol. 106, Issue 6; Other Information: DOI: 10.1103/PhysRevLett.106.062501; (c) 2011 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEGREES OF FREEDOM
ELECTRONS
NEUTRONS
NUCLEAR QUADRUPOLE RESONANCE
PROTONS
SCATTERING
SYMMETRY
VALENCE
VIBRATIONAL STATES
ZIRCONIUM 92
BARYONS
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
FERMIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
NUCLEI
NUCLEONS
RESONANCE
STABLE ISOTOPES
ZIRCONIUM ISOTOPES