Estimation of the double alpha-decay half-life

The model for the description of the simultaneous emission of two α-particles from the opposite sides of the nucleus (the double α-decay) is discussed in detail. The 32 smallest values of the half-lives of the double α-decay of nuclei are calculated. The daughter nuclei formed after the double α-dec...

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Bibliographic Details
Main Author: V.Yu. Denisov
Format: Article
Language:English
Published: Elsevier 2022-12-01
Series:Physics Letters B
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269322007031
Description
Summary:The model for the description of the simultaneous emission of two α-particles from the opposite sides of the nucleus (the double α-decay) is discussed in detail. The 32 smallest values of the half-lives of the double α-decay of nuclei are calculated. The daughter nuclei formed after the double α-decay are even-even and spherical in the ground state in the model. It is shown that the half-lives of the double α-decay are much smaller than the emission of 8Be cluster with sequential decay of 8Be into two α-particles. The calculated values of the double α-decay half-lives show that measuring this decay is possible in the accelerator experiments by forming the proton-rich nuclei. A detailed comparison of the characteristics of the single and double α-decays as well as the emission of 8Be cluster is presented.
ISSN:0370-2693