XX Anniversary Meeting on the Use of Neutron Scattering in Condensed Matter Research (RNICS-2008), Gatchina (October 13-18, 2008) Crystal structures and elementary excitations
Emission of supersonic soliton wave beams–generators of restructuring of nanocrystals under atom bombardment, and the self-organization of a dynamic superlattice of complexes of soliton atomic vibrations
Abstract:
It has been shown that the dynamic superlattice of pulsed complexes of soliton vibrations or, actually, a “soliton crystal” is self-organized in crystalline materials at high levels of thermal and dynamic excitations of atomic vibrations. The results obtained have been adapted to the alpha uranium crystal system. It has been demonstrated that the atom bombardment of crystalline materials leads to the generation of beams of nonlinear subsonic and supersonic soliton and breather waves. The breathers and solitons initiate threshold kinetic processes of defect formation, such as surface vibrations and evaporation of surface atoms, multiple reflection of bombarding atoms, and restructuring of nanocrystals. The results obtained can be used in experimental investigations of microdynamics of materials under high dynamic and temperature loads by the neutron and ion scattering methods.