Channel Structures Formed in Copper Ingots upon Melting and Evaporation by a High-Power Electron Beam
Sergey Bardakhanov,
Andrey Nomoev,
Makoto Schreiber,
Alexander Radnaev,
Rustam Salimov,
Konstantin Zobov,
Alexey Zavjalov,
Erzhena Khartaeva
Affiliations
Sergey Bardakhanov
Khristianovich Institute of Applied and Theoretical Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya str., 4/1, Novosibirsk 630090, Russia
Andrey Nomoev
Department of Physics and Engineering, Buryat State University, Smolina str., 24a, Ulan-Ude 670000, Russia
Makoto Schreiber
Department of Physics and Engineering, Buryat State University, Smolina str., 24a, Ulan-Ude 670000, Russia
Alexander Radnaev
Department of Physics and Engineering, Buryat State University, Smolina str., 24a, Ulan-Ude 670000, Russia
Rustam Salimov
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, Lavrenteva str., 11, Novosibirsk 630090, Russia
Konstantin Zobov
Khristianovich Institute of Applied and Theoretical Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya str., 4/1, Novosibirsk 630090, Russia
Alexey Zavjalov
Khristianovich Institute of Applied and Theoretical Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya str., 4/1, Novosibirsk 630090, Russia
Erzhena Khartaeva
Department of Physics and Engineering, Buryat State University, Smolina str., 24a, Ulan-Ude 670000, Russia
A new phenomenon is described in this paper: the formation of macroscopic channel structures on the bottom of copper ingots which were used as the target for the synthesis of copper nanoparticles by high-power electron beam evaporation and condensation. In the synthesis experiment, the cylindrical copper ingot is melted and partially evaporated in a graphite crucible. The channel structures were originally observed after a series of nanoparticle synthesis experiments in varying conditions. In the present work, various process conditions are varied in order to recreate the structures and identify their mechanism of formation. Conditions in which the channel structures form and do not form are identified and interesting microstructures are observed near the channel structures.
