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arXiv · 2204.11739

Pairing enhancement in a two-neutron transfer process through the continuum

Gagandeep Singh·Lorenzo Fortunato·Andrea Vitturi
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Abstract

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.

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Gagandeep Singh, Lorenzo Fortunato, Andrea Vitturi. 2022-04-25. Pairing enhancement in a two-neutron transfer process through the continuum. https://doi.org/10.1016/j.physletb.2022.137413

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