Exploring the possible two-proton radioactivity of 38,39Ti
Two-proton (2p) radioactivity represents a rare decay mode that has been experimentally observed only in a selected few nuclei. The exploration of 2p emission is crucial for elucidating the structure, mass, and nucleon-nucleon interactions within exotic proton-rich nuclei. 39Ti has long been postula...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Physics Letters B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325000176 |
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| author | B. Huang F.P. Bai J.G. Li D.Q. Fang S.M. Wang |
| author_facet | B. Huang F.P. Bai J.G. Li D.Q. Fang S.M. Wang |
| author_sort | B. Huang |
| collection | DOAJ |
| description | Two-proton (2p) radioactivity represents a rare decay mode that has been experimentally observed only in a selected few nuclei. The exploration of 2p emission is crucial for elucidating the structure, mass, and nucleon-nucleon interactions within exotic proton-rich nuclei. 39Ti has long been postulated as a potential candidate for 2p emission; however, experimental investigations have yet to confirm its 2p decay. To provide more accurate information for further studies, we utilize the Gamow shell model (GSM) and the Gamow coupled channel (GCC) method to analyze the prospective 2p radioactivity of isotopes 38,39Ti. Our calculations suggest that 39Ti is indeed a viable candidate for 2p emission. Notably, the estimated partial 2p decay width for 39Ti, predicted from the three-body GCC method, suggests that its 2p decay could rival its β decay in likelihood, although this is highly dependent on the specific 2p decay energy. Additionally, our analysis indicates a propensity for pairing between the valence protons in 39Ti. A similar investigative approach reveals that 38Ti exhibits a higher 2p decay energy and a broader decay width than 39Ti, positioning it as a more promising candidate for 2p decay. |
| format | Article |
| id | doaj-art-7af02906678d48ee8b7f006fd32f89dc |
| institution | Kabale University |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-7af02906678d48ee8b7f006fd32f89dc2025-02-10T04:33:54ZengElsevierPhysics Letters B0370-26932025-02-01861139257Exploring the possible two-proton radioactivity of 38,39TiB. Huang0F.P. Bai1J.G. Li2D.Q. Fang3S.M. Wang4Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China; Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, ChinaKey Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China; Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaKey Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China; Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, China; Corresponding authors.Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China; Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, China; Corresponding authors.Two-proton (2p) radioactivity represents a rare decay mode that has been experimentally observed only in a selected few nuclei. The exploration of 2p emission is crucial for elucidating the structure, mass, and nucleon-nucleon interactions within exotic proton-rich nuclei. 39Ti has long been postulated as a potential candidate for 2p emission; however, experimental investigations have yet to confirm its 2p decay. To provide more accurate information for further studies, we utilize the Gamow shell model (GSM) and the Gamow coupled channel (GCC) method to analyze the prospective 2p radioactivity of isotopes 38,39Ti. Our calculations suggest that 39Ti is indeed a viable candidate for 2p emission. Notably, the estimated partial 2p decay width for 39Ti, predicted from the three-body GCC method, suggests that its 2p decay could rival its β decay in likelihood, although this is highly dependent on the specific 2p decay energy. Additionally, our analysis indicates a propensity for pairing between the valence protons in 39Ti. A similar investigative approach reveals that 38Ti exhibits a higher 2p decay energy and a broader decay width than 39Ti, positioning it as a more promising candidate for 2p decay.http://www.sciencedirect.com/science/article/pii/S0370269325000176Nuclei far from stabilityTwo-proton radioactivityGamow shell modelGamow coupled-channel method |
| spellingShingle | B. Huang F.P. Bai J.G. Li D.Q. Fang S.M. Wang Exploring the possible two-proton radioactivity of 38,39Ti Physics Letters B Nuclei far from stability Two-proton radioactivity Gamow shell model Gamow coupled-channel method |
| title | Exploring the possible two-proton radioactivity of 38,39Ti |
| title_full | Exploring the possible two-proton radioactivity of 38,39Ti |
| title_fullStr | Exploring the possible two-proton radioactivity of 38,39Ti |
| title_full_unstemmed | Exploring the possible two-proton radioactivity of 38,39Ti |
| title_short | Exploring the possible two-proton radioactivity of 38,39Ti |
| title_sort | exploring the possible two proton radioactivity of 38 39ti |
| topic | Nuclei far from stability Two-proton radioactivity Gamow shell model Gamow coupled-channel method |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325000176 |
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