One-neutron removal reactions induced by two-neutron Borromean nuclei are studied within a Transfer-to-the-Continuum (TC) reaction framework, which incorporates the three-body character of the incident nucleus. The relative energy distribution of the residual unbound two-body subsystem, which is assumed to retain information on the structure of the original three-body projectile, is computed by evaluating the transition amplitude for different neutron-core final states in the continuum. These transition amplitudes depend on the overlaps between the original three-body ground-state wave function and the two-body continuum states populated in the reaction, thus ensuring a consistent description of the incident and final nuclei. By comparing different 11Li three-body models, it is found that the 11LiLi relative energy spectrum is very sensitive to the position of the and states in 10Li and to the partial wave content of these configurations within the 11Li ground-state wave function. The possible presence of a low-lying resonance is discussed. The coupling of the single particle configurations with the non-zero spin of the 9Li core, which produces a spin-spin splitting of the states, is also studied. Among the considered models, the best agreement with the available data is obtained with a 11Li model that incorporates the actual spin of the core and contains ∼31% of -wave content in the n-9Li subsystem, in accord with our previous findings for the 11LiLi transfer reaction, and a near-threshold virtual state.
|Titolo:||Linking structure and dynamics in ( p , pn ) reactions with Borromean nuclei: The 11 Li( p , pn ) 10 Li case|
|Data di pubblicazione:||2017|
|Appare nelle tipologie:||1.1 Articolo in rivista|