Spectroscopy studies using two-nucleon knockout

Two-nucleon knockout spectroscopy at the limits of nuclear stability.

Sudden single-nucleon removal reactions from fast radioactive beams are now key to studies of the structure of rare isotopes. The sensitivity of the heavy residue's parallel momentum distribution to the orbital angular momentum of the removed nucleon is a crucial feature with a high spectroscopic value. Two-nucleon removal reactions provide experimental reach toward the rarest nuclear species. ...

Spectroscopy and correlations probed in direct two-nucleon knockout reactions

Nucleon knockout reactions from fast radioactive secondary beams colliding with light nuclear targets provide a useful tool for studying structure away from the valley of βstability. An efficient means of producing specific exotic nuclei, the technique has been recently applied to study nuclear halos, isospin symmetry and cross-shell excitations, and in tracking the evolution of single-particle...

Diffraction dissociation contributions to two-nucleon knockout reactions and the suppression of shell-model strength

The contributions to the cross sections of intermediate energy two-nucleon knockout reactions from events in which one nucleon is removed by the stripping (inelastic breakup) mechanism and a second by the diffraction (elastic breakup) mechanism are discussed. The small additional contributions from two-nucleon diffraction events are also estimated. The approach used combines the eikonal reactio...

Spectroscopy of Radioactive Beams from Single-nucleon Knockout Reactions: Application to the Search for Proton Halos

Two - nucleon knockout contributions to the 12 C ( e , e ′ p ) reaction in the dip and ∆ ( 1232 ) regions

The contributions from 12C(e, epn) and 12C(e, epp) to the semi-exclusive 12C(e, ep) cross section have been calculated in an unfactorized model for two-nucleon emission. We assume direct two-nucleon knockout after virtual photon coupling with the two-body pion-exchange currents in the target nucleus. Results are presented at several kinematical conditions in the dip and ∆(1232) regions. The cal...