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2 PublikationenElectric and magnetic dipole strength in 54Fe
Schwengner, R.; Massarczyk, R.; Bemmerer, D.; Beyer, R.; Bhike, M.; Brown, B. A.; Butterling, M.; Derya, V.; Dietz, M.; Fiedler, F.; Frotscher, A.; Gayer, U.; Grieger, M.; Hartmann, A.; Junghans, A. R.; Kögler, T.; Krishichayan, F.; Ludwig, F.; Lutz, B.; Pai, H.; Römer, K.; Sieja, K.; Szücs, T.; Takacs, M.; Tornow, W.; Wagner, A.
Abstract
The dipole strength of the N=28 nuclide 54Fe was studied in photon-scattering experiments using bremsstrahlung produced with electron beams of energies of 7.5 and 13.9 MeV at the gELBE facility as well as using quasi-monoenergetic and linearly polarized photon beams of 26 energies within the range from 5.5 to 11.4 MeV at the HIgS facility. About 100 J=1 states were identified, out of them 19 with 1+ and 30 with 1- assignment. The quasicontinuum of unresolved transitions was included in the analysis of the spectra and the intensities of branching transitions were estimated on the basis of simulations of statistical γ-ray cascades. As a result, the photoabsorpton cross section up to the neutron-separation energy was determined and compared with predictions of statistical reaction codes. The experimental M1 strengths from resolved 1+ states are compared with results of large-scale shell-model calculations.
Keywords: Photon scattering; nuclear resonance fluorescence; angular distributions; polarization; statistical gamma-ray cascades; photoabsorption cross section; dipole excitations; shell model
Beteiligte Forschungsanlagen
- Strahlungsquelle ELBE DOI: 10.17815/jlsrf-2-58
- γ-ELBE DOI: 10.58065/24020
Verknüpfte Publikationen
- DOI: 10.58065/24020 is cited by this (Id 30730) publication
- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 30730) publication
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Physical Review C 101(2020), 064303
DOI: 10.1103/PhysRevC.101.064303
Cited 8 times in Scopus -
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HAL Id: hal-02961162: https://hal.archives-ouvertes.fr/hal-02961162/document
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