Elsevier

Physics Letters B

Volume 642, Issue 4, 16 November 2006, Pages 322-325
Physics Letters B

Mean-field cluster potentials for various cluster decays

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Abstract

Based on a self-consistent mean-field model, a folding form of cluster potentials has been suggested, leading to the simple parameter-free quantum tunneling calculations of various cluster decays in atomic nuclei. The mean-field-type potential provides a ground for the descriptions of both shell structure and cluster property in nuclei. The α-particle, heavier-cluster and diproton decays of even–even nuclei above magic numbers have been investigated, showing a good agreement with experimental data. The parameter-free calculation is particularly useful for the predictions of the decay properties of exotic nuclei where experimental data are scarce and self-consistent shell models have worked well.

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Acknowledgements

We are grateful to P.D. Stevenson for providing the SHF code, and R. Wyss for useful comments. This work has been supported by the Natural Science Foundation of China under Grant Nos. 10525520 and 10475002, the Key Grant Project (Grant No. 305001) and Doctoral Foundation (Grant No. 20030001088) of Education Ministry of China. We also thank the PKU Computer Center where numerical calculations have been done.

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