Summary
The kinetic energies of theA=4n nuclei (withZ=N=2n) up toA=40 are estimated on the basis of the α-particle model. This estimate is used, together with known regularities in the binding energies and an estimate of the Coulomb energy, to show that, on this model, there must be an additive attractive interaction between neighbouring α-particles. New physical criteria are given for the stability of the α-particles and the degree to which their motion is adiabatic; the relevant parameters are estimated by the use of quantum mechanics. A comparison is made with the analogous situation in molecules.
Riassunto
Si stimano le energie cinetiche dei nucleiA=4n (conZ=N=2n) fino adA=40, sulla base del modello a particelle α. Si usa questo valore, assieme a note regolarità delle energie di legame e un valore stimato dell’energia coulombiana, per mostrare che, in questo modello, deve esistere un’ulteriore interazione addittiva tra particelle α vicine. Si dànno nuovi criteri fisici per la stabilità delle particelle α e il grado di adiabaticità del loro moto; con l’ausilio della meccanica quantistica si valutano i parametri rilevanti. Si fa un confronto con l’analogo modello molecolare.
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Herzenberg, A. Studies on the α-particle model of nuclei. — I. Nuovo Cim 1, 986–1007 (1955). https://doi.org/10.1007/BF02731410
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DOI: https://doi.org/10.1007/BF02731410