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Half-lives and fine structure for the α decay of deformed even-even nuclei

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  • Radioactive Nuclear Beam Physics and Nuclear Astrophysics
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Abstract

The α-decay properties of well-deformed even-even nuclei are systematically calculated within the multichannel cluster model (MCCM). Instead of working in the WKB framework, the quasibound solution to the coupled Schrödinger equation is presented with outgoing wave boundary conditions, and the coupling potential is taken into full account in terms of the general quantum theories. The calculated α-decay half-lives are found to agree well with the experimental data with a mean factor of less than 2. The fine structure observed in α decay is also well reproduced by the four-channel microscopic calculation. Very strikingly, the MCCM can give relatively precise descriptions of the branching ratio to excited 4+ states, which is often overestimated in the usual WKB calculations. We expect it to be a significant development of theoretical models toward quantitative descriptions of α transitions to high-spin daughter states.

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Authors and Affiliations

  1. Department of Physics, Nanjing University, Nanjing, 210093, China

    DongDong Ni & ZhongZhou Ren

  2. Kavli Institute for Theoretical Physics China, Beijing, 100190, China

    DongDong Ni & ZhongZhou Ren

  3. Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou, 730000, China

    ZhongZhou Ren

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  1. DongDong Ni
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Correspondence to ZhongZhou Ren.

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Ni, D., Ren, Z. Half-lives and fine structure for the α decay of deformed even-even nuclei. Sci. China Phys. Mech. Astron. 54 (Suppl 1), 24–31 (2011). https://doi.org/10.1007/s11433-011-4435-5

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  • DOI: https://doi.org/10.1007/s11433-011-4435-5

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