Abstract
Abstract High-repetition-rate gas spark switches are widely used in the field of nanosecond pulses. A discharge experimental platform has been established to investigate the erosion process of the electrodes in a high-repetition-rate gas spark switch. The surface morphology of the electrodes after different numbers of discharges at a repetition rate of 100 Hz is observed using a confocal laser scanning microscope. The results show that three different morphologies are presented on the electrode surface. Compared with the anode, the cathode surface has a higher roughness. There are irregular protrusions in the central area of the cathode, and small dot-like protrusions in the central area of the anode. The erosion process of the electrode at a high repetition rate can be divided into two stages. In the first stage, the roughness of the electrode increases with the discharge number. In the second stage, the arithmetic mean deviation of the central area of the cathode is maintained at around 4 μm, and on the central area of the anode, it is maintained at around 1 μm. The maximum profile peak height of the electrode continues to increase with the discharge number. This research has significant implications for the design of long-life gas spark switches.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call