Triaxial shape of the one-proton emitter $^{149}$Lu
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929386606821376 |
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| author | Lu, Qi Zhang, Kai-Yuan Zhang, Shi-Sheng |
| author_facet | Lu, Qi Zhang, Kai-Yuan Zhang, Shi-Sheng |
| contents | We revisit the proton emitter $^{149}$Lu utilizing the recently developed triaxial relativistic Hartree-Bogoliubov theory in continuum (TRHBc). By incorporating the microscopic nuclear structure properties from the TRHBc theory into the WKB approximation, we successfully reproduce the measured proton-emission half-life of $^{149}$Lu within experimental uncertainties. A triaxial ground state characterized by ($β=0.17,γ=31^\circ$) has been clarified for $^{149}$Lu. The inclusion of triaxiality significantly changes nuclear density distributions and potentials, which results in enhanced binding of both the nuclear system and the proton-emitting orbital. As a result, a slightly extended half-life for the proton emission of $^{149}$Lu is achieved after considering triaxial deformation degrees of freedom. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_09803 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Triaxial shape of the one-proton emitter $^{149}$Lu Lu, Qi Zhang, Kai-Yuan Zhang, Shi-Sheng Nuclear Theory We revisit the proton emitter $^{149}$Lu utilizing the recently developed triaxial relativistic Hartree-Bogoliubov theory in continuum (TRHBc). By incorporating the microscopic nuclear structure properties from the TRHBc theory into the WKB approximation, we successfully reproduce the measured proton-emission half-life of $^{149}$Lu within experimental uncertainties. A triaxial ground state characterized by ($β=0.17,γ=31^\circ$) has been clarified for $^{149}$Lu. The inclusion of triaxiality significantly changes nuclear density distributions and potentials, which results in enhanced binding of both the nuclear system and the proton-emitting orbital. As a result, a slightly extended half-life for the proton emission of $^{149}$Lu is achieved after considering triaxial deformation degrees of freedom. |
| title | Triaxial shape of the one-proton emitter $^{149}$Lu |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2406.09803 |