Low-energy nuclear reactions in crystal structures

Results of studying low-energy nuclear reactions at the HELIS facility (LPI) are presented. Investigations of yields from DD reactions in deuterated crystal structures at deuteron energies of 10 to 25 keV show a considerable enhancement effect. It is shown that exposure of the deuterated targets to the Н⁺ (proton) and Ne⁺ beams with energies from 10 to 25 keV and an X-ray beam with the energy of 20 to 30 keV stimulates DD reaction yields. For the CVD diamond target, it is shown that its orientation with respect to the deuteron beam affects the neutron yield. The D⁺ beam is shown to cause much higher heat release in the TiD_x target than the Н⁺ and Ne⁺ beams, and this heat release depends on the deuterium concentration in the target and the current density of the deuteron beam.