Coherent Schwinger scattering of fast neutrons versus coherent elastic nuclear scattering in a crystal

For the first time it is shown that coherent effects in particle scattering in an aligned crystal can appear due to nuclear interaction. The coherent effects at both Schwinger and coherent elastic nuclear scattering have been studied as well as the interference of fast neutrons in aligned thin crystals

Neutrons planar channeling in crystals

The possibility of neutron planar channeling is theoretically investigated. It is shown that stable channeling appears only for relativistic neutrons with relativistic factor greater than 5. The energy bands and its population are calculated for the different neutron energies and entrance angles

Exact solution of Dirac equation for axially channeled relativistic electrons

The exact analytical solution of the Dirac equation for axial channeled electrons, with taking into account the spin direction of the channeled electron is found. It is shown that the longitudinal polarization manifests itself as the splitting of every energy level into two sublevels