title: Fine structure of the giant M1 resonance in 90Zr.
abstract: The M1 excitations in the nuclide 90Zr have been studied in a photon-scattering experiment with monoenergetic and linearly polarized beams from 7 to 11 MeV. More than 40 J(π)=1+ states have been identified from observed ground-state transitions, revealing the fine structure of the giant M1 resonance with a centroid energy of 9 MeV and a sum strength of 4.17(56) μ(N)(2). The result for the total M1 strength and its fragmentation are discussed in the framework of the three-phonon quasiparticle-phonon model.
authors: Department of Physics, Duke University, Durham, North Carolina 27708, USA.
authors: G
authors: G
authors: Rusev
authors: N
authors: N
authors: Tsoneva
authors: F
authors: F
authors: Dönau
authors: S
authors: S
authors: Frauendorf
authors: R
authors: R
authors: Schwengner
authors: A P
authors: AP
authors: Tonchev
authors: A S
authors: AS
authors: Adekola
authors: S L
authors: SL
authors: Hammond
authors: J H
authors: JH
authors: Kelley
authors: E
authors: E
authors: Kwan
authors: H
authors: H
authors: Lenske
authors: W
authors: W
authors: Tornow
authors: A
authors: A
authors: Wagner