Probing the pairing interaction through two-neutron transfer reactions

20th International School on Nuclear Physics, Neutron Physics and Applications

Grasso, M.^1 ; Beaumel, D.^1 ; Khan, E.^1 ; Lacroix, D.^1 ; Margueron, J.^2 ; Vitturi, A.^3,4

Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Orsay Cedex

F-91406, France^1

Institut de Physique Nucléaire, IN2P3-CNRS, Université Lyon 1, Villeurbanne

69622, France^2

Dipartimento di Fisica, Università di Padova, Padova

IT-35131, Italy^3

Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova

IT-35131, Italy^4

关键词: Cr isotopes;    Ground state transition;    Mean field approach;    Pairing correlations;    Pairing interactions;    Spatial distibution;    Theoretical formula;    Transfer reaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/533/1/012003/pdf
DOI  :  10.1088/1742-6596/533/1/012003

来源: IOP

【 摘 要 】

We analyze two-neutron transfers in nuclei within a mean-field approach. We first show that the response associated with pairing excitations can be affected by the surface/volume localization of the employed effective pairing interaction. Then, ground-state-to-ground-state transitions are studied and some improvements on the currently used theoretical formulas are discussed. Finally, Cr isotopes at the drip line are analyzed. The analysis of pair-transfer reactions in these nuclei may improve our understanding of two aspects: the spatial distibution of pairing correlations in nuclei and the debated question of the persistence of pairing at the drip lines.