Publication details

Revisiting particle dynamics in HiPIMS discharges. I. General effects

Authors

HNILICA Jaroslav KLEIN Peter VAŠINA Petr SNYDERS Rony BRITUN Nikolay

Year of publication 2020
Type Article in Periodical
Magazine / Source Journal of applied physics
MU Faculty or unit

Faculty of Science

Citation
Web http://aip.scitation.org/doi/10.1063/5.0009378
Doi http://dx.doi.org/10.1063/5.0009378
Keywords magnetron sputtering; HiPIMS; spectroscopy; plasma diagnostics; sputtering process; LIF; AAS
Description A detailed experimental study of high power impulse magnetron sputtering processes is performed by time-resolved imaging of the ground state sputtered particles. New details related to the behavior of both neutral and singly ionized atoms are shown, as a result of separate treatment of the plasma-on and plasma-off time phases. In Paper I, the ion/neutral density redistribution in the ionization zone during sputtering is analyzed; the role of main discharge parameters, such as pulse repetition rate, pulse energy, etc., is discussed systematically. The time-resolved evolution of the ground state levels population for both sputtered neutrals and ions is also considered. In addition, propagation of the sputtered particles is analyzed using 2D density gradient diagrams calculated based on the measured particle density distributions. The results of this work are compared, when possible, to the data obtained previously [Britun et al., J. Appl. Phys. 117, 163302 (2015)].
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