$\alpha$ particle preformation in heavy nuclei and penetration probability

Abstract

The $\alpha$ particle preformation in the even-even nuclei from ${}^{108}$Te to ${}^{294}$118 and the penetration probability have been studied. The isotopes from Pb to U have been firstly investigated since the experimental data allow us to extract the microscopic features for each element. The assault frequency has been estimated using classical methods and the penetration probability from tunneling through the Generalized Liquid Drop Model (GLDM) potential barrier. The preformation factor has been extracted from experimental $\alpha$ decay energies and half-lives. The shell closure effects play the key role in the $\alpha$ preformation. The more the nucleon number is close to the magic numbers, the more the formation of $\alpha$ cluster is difficult inside the mother nucleus. The penetration probabilities reflect that 126 is a neutron magic number. The penetration probability range is very large compared to that of the preformation factor. The penetration probability determines mainly the $\alpha$ decay half-life while the preformation factor allows us to obtain information on the nuclear structure. The study has been extended to the newly observed heaviest nuclei.

References in corpus (10)

• Four-particle condensate in strongly coupled fermion systems
• alpha-nucleus potentials, alpha-decay half-lives, and shell closures for superheavy nuclei
• alpha decay half-lives of new superheavy nuclei within a generalized liquid drop model
• Recent $\alpha$ decay half-lives and analytic expression predictions including superheavy nuclei
• Theoretical and experimental αdecay half-lives of the heaviest odd-Z elements and general predictions
• Role of effective interaction in nuclear disintegration processes
• Alpha-decay properties of superheavy elements $Z=113-125$ in the relativistic mean-field theory with vector self-coupling of $\omega$ meson
• Alpha decay chains from element 113
• Effects of resonant single-particle states on pairing correlations
• Roles of proton-neutron interactions in alpha-like four-nucleon correlations

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