The paper presents the results of studying the structure and phase state of tungsten and tungsten-copper alloy after pulsed action of compression plasma flows and irradiation with helium ions. The compression plasma flows were used to modify the surface layer of tungsten, as well as to create an alloy based on tungsten and copper. Using scanning electron microscopy and X-ray structural analysis, the formation of radiation defects on the tungsten surface was detected in the form of local areas of exfoliation and destruction, which begin to form at helium ion irradiation doses of 2 × 10¹⁷ cm⁻². It is shown that preliminary plasma treatment of the surface in the melting mode leads to the complete disappearance of surface radiation defects up to a dose of 2 × 10¹⁷ cm⁻², which may be associated with the formation of a fine-crystalline grain structure, the intergranular boundaries of which serve as effective sinks for primary radiation defects.

This paper discusses the setup and optimization of the DC-60 cyclotron operating mode for irradiating polyethylene terephthalate (PET) films with heavy krypton ions to create track membranes. The stages of accelerator tuning are described, including calculations of acceleration parameters and the adjustment of the radio frequency (RF) system for krypton plasma generation. Key parameters are considered, such as magnet current, inflector and deflector voltages, and beam characteristics at the accelerator output. Special attention is given to the beam transport and focusing system, and the optimization of irradiation conditions to ensure the required accuracy and reproducibility of experiments. The results obtained are important for the further development of ion-track modification methods for polymer materials and their application in various technological and commercial fields.