Abstract
The microscopic analysis of the excitation mechanism of M1 giant resonance in the 208Pb(n, γ) reaction emphasizes the fundamental role of the nuclear shell structure in determining an effective surface form factor for the nucleon-nucleus interaction. Results of calculations of transition amplitudes obtained with a microscopic radial form factor in the frame of the direct-semidirect model suggest a possible connection between the excitation of the giant M1 resonance and the asymmetries in angular distributions of emitted photons, in spite of the strong statistical contribution to the capture cross section.
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