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Recent progress in two-proton radioactivity

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Abstract

During the last few decades, rare isotope beam facilities have provided unique data for studying the properties of nuclides located far from the beta-stability line. Such nuclei are often accompanied by exotic structures and radioactive modes, which represent the forefront of nuclear research. Among them, two-proton (2p) radioactivity is a rare decay mode found in a few highly proton-rich isotopes. The 2p decay lifetimes and properties of emitted protons hold invaluable information regarding the nuclear structures in the presence of a low-lying proton continuum; as such, they have attracted considerable research attention. In this review, we present some of the recent experimental and theoretical progress regarding the 2p decay, including technical innovations for measuring nucleon–nucleon correlations and developments in the models that connect their structural aspects with their decay properties. This impressive progress should play a significant role in elucidating the mechanism of these exotic decays, probing the corresponding components inside nuclei, and providing deep insights into the open quantum nature of dripline systems.

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Authors and Affiliations

  1. Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai, 200433, China

    Long Zhou, Si-Min Wang, De-Qing Fang & Yu-Gang Ma

  2. Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai, 200438, China

    Long Zhou, Si-Min Wang, De-Qing Fang & Yu-Gang Ma

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  1. Long Zhou
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by all authors. The first draft of the manuscript was written by Long Zhou and Si-Min Wang, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Si-Min Wang.

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This work is partially supported by the National Natural Science Foundation of China (Nos. 12147101, 11925502, 11935001, 11961141003, 11890714), the National Key R&D Program of China (No. 2018YFA0404404), the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDB34030000), and the Shanghai Development Foundation for Science and Technology (No. 19ZR1403100).

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Zhou, L., Wang, SM., Fang, DQ. et al. Recent progress in two-proton radioactivity. NUCL SCI TECH 33, 105 (2022). https://doi.org/10.1007/s41365-022-01091-1

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