Abstract
General properties of the shell structure in superdeformed nuclei at high rotational frequencies are studied in simple models. Special emphasis is laid on shell effects for various reflection asymmetric and strongly elongated nuclear shapes formed in peripheral collisions of heavy ions. A detailed discussion of the shell energy in (Z, ω) space is presented for symmetric 2:1 and 3:1 configurations in light nuclei (10 < Z < 34). In the realistic calculations, we use the cranking Strutinsky (CS) approach and the Saxon-Woods (SW) potential. Our aim here is to discuss the nuclear stability with respect to fission and shape changes at high spins. Moreover, we gave an explanation of the oscillatory behaviour of σfusmax (N, Z) observed in 1p, 2s-1d nuclei.
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