New look at α decay of heavy nuclei

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Abstract
Geiger-Nuttall plots of the accurate modern data on partial half-lives for α decay yield very striking linear correlations. The plots for isotopic sequences which cross the neutron magic number N=126 show clearly the presence of different linear relations for N126. We indicate that this observation and all other data on ground-state to ground-state α decays for even-even nuclei with 76≤Z≤100 may be accounted for very well by a simple model with fixed parameters. An important ingredient in the model is the proposal that preformed α particles in the parent nuclei move in orbits with large values of a global quantum number.

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