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High Spin Resonances in Heavy Ion Collisions

Excitation functions for elastic scattering and reactions of 28Si + 28Si show evidence for the existence of narrow (Γ = 100-200 keV) high-spin (J ≃ 40 ℏ) resonances. The interpretation of these resonances as high-spin fissioning shape isomers is discussed with reference to data for the 28Si + 30Si and 30Si + 30Si systems.