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Magnetic dipole excitations of 50Cr.
- Source :
-
Physical Review C . Jan2016, Vol. 93 Issue 1, p014318-1-014318-9. 9p. - Publication Year :
- 2016
-
Abstract
- The low-lying M1 strength of the open-shell nucleus 50Cr has been studied with the method of nuclear resonance fluorescence up to 9.7 MeV using bremsstrahlung at the superconducting Darmstadt linear electron accelerator S-DALINAC and Compton backscattered photons at the High Intensity γ-ray Source (HIγS) facility between 6 and 9.7 MeV of the initial photon energy. Fifteen 1+ states have been observed between 3.6 and 9.7 MeV. Following our analysis the lowest 1+ state at 3.6 MeV can be considered as an isovector orbital mode with some spin admixture. The obtained results generally match the estimations and trends typical for the scissors-like mode. Detailed calculations within the Skyrme quasiparticle random-phase-approximation method and the large-scale shell model justify our conclusions. The calculated distributions of the orbital current for the lowest 1+-state suggest the schematic view of Lipparini and Stringari (isovector rotation-like oscillations inside the rigid surface) rather than the scissors-like picture of Lo Iudice and Palumbo. The spinM1 resonance is shown to be mainly generated by spin-flip transitions between the orbitals of the fp shell. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24699985
- Volume :
- 93
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Physical Review C
- Publication Type :
- Academic Journal
- Accession number :
- 112852228
- Full Text :
- https://doi.org/10.1103/PhysRevC.93.014318