Figure 1

(a) two examples of the spatial profile of the light emission from the plasma discharge between the end of the capillary (at 0 mm) and the liquid (at 10 mm) for two cases of \(1\, \text {k}\Omega \) and \(680\, \text {k}\Omega \) at specific times: respectively at \(3.2\, \upmu \text {s}\) and \(5.6\, \upmu \text {s}\), using 10 ns exposures. The sketch of the jet and liquid target are present for visualization purposes and therefore out of scale. The waveforms for all five examined cases of varying resistance are shown in (b) for the high voltage, (c) the potential at the grounded resistor, and (d) the current measured with the Rogowski coil.