Energy Dependence of the Reorientation Effect and the Static Quadrupole Moment of the 0.847-MeV 2+ State in Fe56
The energy dependence of the reorientation effect has been investigated using O16 and S32 ions incident on Fe56 nuclei. The influence of nuclear interference on the reorientation effect was observed before it could be detected on the elastic cross section, and exhibited an angular dependence similar to that expected for the reorientation effect. It was found that an appropriate separation of projectile and target nuclei was given by 2a=R0(A113+A213)+∆, where R0=1.6 fm and ∆>=3.5 fm. The static quadrupole moment of the 0.847-MeV 2+ state in Fe56 was measured to be Q22=-0.23+/-0.03 b, while the rotational value is given by |QR|=0.276 b.