Exploration on $1n$ halo nucleus $^{19}$C from D-RHFB structure to reaction observables
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arXiv
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2024
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| author | An, Jia-Lin Lu, Qi Long, Wen Hui Zhang, Shi-Sheng |
| author_facet | An, Jia-Lin Lu, Qi Long, Wen Hui Zhang, Shi-Sheng |
| contents | We utilize the axially deformed relativistic Hartree-Fock-Bogoliubov (D-RHFB) model to describe the structure of neutron-rich carbon isotopes, taking into account the continuum, pairing correlations, tensor force and their interplay. In this scheme, one- and two-neutron separation energies of neutron-rich carbon isotopes agree well with measured data, as well as the spin and parity $J^π=1/2^+$ for the ground state of $^{19}$C, which is a long-standing problem for theoretical structure models. With the structure input extracted from the microscopic D-RHFB model, the reaction observables are well described the Glauber model. In particular, this unified approach accurately reproduces the inclusive longitudinal momentum distributions of the breakup reaction $^{19}$C + $^{12}$C at 240 MeV/nucleon, which rule out the possibility of the ground state of $^{19}$C being $J^π=3/2^+$. Moreover, the continuum plays a crucial role in the formation of the halo, which is further confirmed by the reaction cross sections and longitudinal momentum distributions. However, the tensor force components carried by the $π$-coupling are not as significant as anticipated. Consequently, the D-RHFB + Glauber approach turns out to be a promising tool to search for halo candidates from the structure to the reaction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_09766 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Exploration on $1n$ halo nucleus $^{19}$C from D-RHFB structure to reaction observables An, Jia-Lin Lu, Qi Long, Wen Hui Zhang, Shi-Sheng Nuclear Theory We utilize the axially deformed relativistic Hartree-Fock-Bogoliubov (D-RHFB) model to describe the structure of neutron-rich carbon isotopes, taking into account the continuum, pairing correlations, tensor force and their interplay. In this scheme, one- and two-neutron separation energies of neutron-rich carbon isotopes agree well with measured data, as well as the spin and parity $J^π=1/2^+$ for the ground state of $^{19}$C, which is a long-standing problem for theoretical structure models. With the structure input extracted from the microscopic D-RHFB model, the reaction observables are well described the Glauber model. In particular, this unified approach accurately reproduces the inclusive longitudinal momentum distributions of the breakup reaction $^{19}$C + $^{12}$C at 240 MeV/nucleon, which rule out the possibility of the ground state of $^{19}$C being $J^π=3/2^+$. Moreover, the continuum plays a crucial role in the formation of the halo, which is further confirmed by the reaction cross sections and longitudinal momentum distributions. However, the tensor force components carried by the $π$-coupling are not as significant as anticipated. Consequently, the D-RHFB + Glauber approach turns out to be a promising tool to search for halo candidates from the structure to the reaction. |
| title | Exploration on $1n$ halo nucleus $^{19}$C from D-RHFB structure to reaction observables |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2406.09766 |