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Dipole response of238U to polarized photons below the neutron separation energy
Author(s) -
S. L. Hammond,
A. S. Adekola,
C. T. Angell,
H. J. Karwowski,
E. Kwan,
G. Rusev,
A. P. Tonchev,
W. Tornow,
C. R. Howell,
J. H. Kelley
Publication year - 2012
Publication title -
physical review c
Language(s) - English
Resource type - Journals
eISSN - 1089-490X
pISSN - 0556-2813
DOI - 10.1103/physrevc.85.044302
Subject(s) - physics , excited state , dipole , atomic physics , random phase approximation , resonance (particle physics) , quasiparticle , ground state , energy (signal processing) , giant resonance , nuclear reaction , condensed matter physics , quantum mechanics , superconductivity
1) dipole strengths in nuclei[1]. Observation of dipole states are important because theycharacterize the various collective and single-particle nuclearexcitation modes, in particular, the scissors mode, the spin-ip mode, and the pygmy dipole resonance. These differentexcitation modes are prominent in various regions below ornear the neutron separation energy and represent importantnuclear structure phenomena. For

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