Pairing enhancement in a two-neutron transfer process through the continuum
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2022
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| _version_ | 1866917247160680448 |
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| author | Singh, Gagandeep Fortunato, Lorenzo Vitturi, Andrea |
| author_facet | Singh, Gagandeep Fortunato, Lorenzo Vitturi, Andrea |
| contents | Enhancement, due to constructive interference through the many possible reaction channels, occurs in two-neutron transfer reactions from a bound system $A$ to a weakly-bound system ($A$+2), whenever the intermediate system is unbound and consists of a continuum with a resonant state. We elucidate this phenomenon in the case of $^6$He, modeled as two neutrons in the orbitals of an intermediate $^5$He nucleus, comparing the realistic case of an unbound ($A$+1) system with an artificially bound case. A properly modeled continuum in these calculations is found to be crucial and leads to significant enhancement due to pairing correlations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2204_11739 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Pairing enhancement in a two-neutron transfer process through the continuum Singh, Gagandeep Fortunato, Lorenzo Vitturi, Andrea Nuclear Theory Nuclear Experiment Enhancement, due to constructive interference through the many possible reaction channels, occurs in two-neutron transfer reactions from a bound system $A$ to a weakly-bound system ($A$+2), whenever the intermediate system is unbound and consists of a continuum with a resonant state. We elucidate this phenomenon in the case of $^6$He, modeled as two neutrons in the orbitals of an intermediate $^5$He nucleus, comparing the realistic case of an unbound ($A$+1) system with an artificially bound case. A properly modeled continuum in these calculations is found to be crucial and leads to significant enhancement due to pairing correlations. |
| title | Pairing enhancement in a two-neutron transfer process through the continuum |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2204.11739 |