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Microscopic study of halo nuclei through (p,t) reactions

par Descouvemont, Pierre
Référence Physics letters. Section B, 862, 139356
Publication Publié, 2025-03

Article révisé par les pairs

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Résumé :

We analyze (p,t) two-neutron transfer reactions in a semi-microscopic model. The overlap integrals of the target nucleus are calculated in a microscopic cluster model. The Resonating Group Method (RGM) assumes a cluster structure of the nucleus, and is well adapted to halo nuclei since the long-range part of the wave function is accurately described. We focus on (p,t) reactions involving 6He and 11Li, which are well known core+n+n halo nuclei. The RGM is based on a nucleon-nucleon interaction, and therefore does not involve any fitting procedure. It also provides overlap integrals of excited states of the core nucleus. We present overlap integrals and spectroscopic factors of 6He and 11Li. We compute the He6(p,t)4He and Li11(p,t)9Li cross sections at the DWBA, and compare them with experiments. For 11Li we also determine the Li11(p,t)9Li⁎ cross section which involves the first excited state of 9Li. A fair agreement with experiment is obtained, considering that no parameter is adjusted.