Pairing resonances and the continuum spectroscopy of 10Li

摘要

Pairing across the particle emission threshold and the properties of corresponding quasiparticlestrength functions are discussed in an extended mean-field approach. This particular type of dynamicalcorrelations gives rise to a unique class of sharp low-lying resonances close to the particle emissionthreshold. Spectral functions for particle and hole states are discussed. They are explored theoretically bysingle-nucleon transfer reactions, populating the low energy continuum with respect to a core nucleus.The cross sections of the reaction d(9Li, 10Li)p at Tlab = 2.36 A MeV, recently measured at REX-ISOLDE,are well reproduced by our calculations including a pairing resonance in the 3/2 partial wave of purelycoupled channels nature.