To discuss the dineutron correlation in the ground state, the quasi-free neutron knockout reaction on 6He is investigated. In the present work, the momentum distribution of the two emitted neutrons is calculated with the α + n + n three-body model and a simple reaction model to assess the effects of the knockout process via the 5He resonance and the target dependence in the momentum distribution. A clear signature of the dineutron correlation can be obtained by choosing the kinematical condition so the process via the 5He resonance is excluded because the 5He resonance drastically changes the momentum distribution. Using the proton target is important in the quantitative discussion on the dineutron correlation by the knockout reaction. In addition to theoretical arguments, a possible experimental setup to determine the dineutron correlation via the quasi-free knockout reaction is considered.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)