Proton-${}^3$H scattering calculation: Elastic and charge-exchange reactions up to 30 MeV

摘要

Proton-${}^3$H elastic scattering and charge-exchange reaction${}^3$H$(p,n){}^3$He in the energy regime above four-nucleon breakup thresholdare described in the momentum-space transition operator framework. Fullyconverged results are obtained using realistic two-nucleon potentials andtwo-proton Coulomb force as dynamic input. Differential cross section, proton analyzing power, outgoing neutronpolarization, and proton-to-neutron polarization transfer coefficients arecalculated between 6 and 30 MeV proton beam energy. Good agreement with theexperimental data is found for the differential cross section both in elasticand charge-exchange reactions; the latter shows a complicated energy andangular dependence. The most sizable discrepancies between predictions and dataare found for the proton analyzing power and outgoing neutron polarization inthe charge-exchange reaction, while the respective proton-to-neutronpolarization transfer coefficients are well described by the calculations.