Low-energy magnetic dipole response in the 57Fe(γ,γ′) reaction

✍ Scribed by P. von Neumann-Cosel; A. Richter; C. Schlegel; R. Schulz

• Book ID: 104337266
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 748 KB
• Volume: 650
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(99)00120-7

✦ Synopsis

The 57Fe(y, T') reaction has been studied up to excitation energies of about 6.5 MeV. The resulting strength distribution below 4 MeV is compared to shell-model calculations with various effective interactions. The shell-model results suggest dominance of M1 excitations. A good description of the 57Fe low-energy spectrum, moments and electromagnetic transitions is achieved with the FPD6 interaction. The model results suggest that the coupling of an unpaired nucleon in 57Fe does not alter the orbital scissors mode strength compared to the even-mass neighbor 56Fe, but leads to a fragmentation and a shift towards lower energies. (~) 1999 Elsevier Science B.V.