Abstract
α-particle angular distribution data from an extensive on-line nuclear orientation study of the favoured decay of nearly spherical, neutron deficient At and Rn nuclei near N=126, as well as of deformed Fr and Pa isotopes are presented. From the comparison of these data with various theoretical models it is found that for nearly spherical nuclei, anisotropic α-emission in favoured decays can be well explained within the shell model but not by a tunnelling model. On the other hand, for the deformed nuclei studied here, a description on the basis of α-particle tunelling through the Coulomb barrier is quite appropriate.
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Communicated by D. Schwalm
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Schuurmans, P., Will, B., Berkes, I. et al. The angular distributions of α-particles emitted by oriented nuclei and their relation to nuclear structure and deformation. Z. Phys. A 358, 239–240 (1997). https://doi.org/10.1007/s002180050318
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DOI: https://doi.org/10.1007/s002180050318