Background: Neutron reactions off lithium isotopes up to 50 MeV are important for nuclear data science, around the International Fusion Material Irradiation Facility (IFMIF) facility in particular.

Purpose: We aim at constructing a semimicroscopic reaction model that describes neutron elastic scattering off ${}^6\mathrm{Li}$ up to 50 MeV, taking the breakup channels of ${}^6\mathrm{Li}$ into account.

Methods: We adopt the continuum-discretized coupled-channels method (CDCC) with an $\alpha +p+n$ three-body model of ${}^6\mathrm{Li}$. We employ the $g$-matrix effective interaction by Jeukenne, Lejeune, and Mahaux (JLM). The renormalization factors of the real and imaginary parts of the JLM interaction are treated as free parameters.

Results: The renormalization parameter of the real part of the JLM interaction is found to be constant ($=1.1$), whereas that for the imaginary part has a smooth energy dependence. The four-body CDCC calculation with these parameters well describes the angular distributions of both proton and neutron elastic scatterings as well as the neutron total cross section and proton total-reaction cross section. The applicable energy range is found to be from 7 MeV to 50 MeV.

Conclusions: We have constructed a reliable reaction model for describing nucleon-${}^6\mathrm{Li}$ scattering between 7 MeV and 50 MeV. This model can directly be applied to inelastic scattering and breakup reactions for ${}^6\mathrm{Li}$ with the help of the complex scaling method.

Close

PrevNext

View figure in article

• Elastic scattering reactions
• Few-body systems
• Models & methods for nuclear reactions
• Nuclear engineering
• Nuclear fusion
• Nuclear reactions
• 6 ≤ A ≤ 19
• Optical, coupled-channel & distorted wave models