Fig. 4From: Schlieren imaging: a powerful tool for atmospheric plasma diagnosticThermal field in water due to APPJ impingement, measured by schlieren imaging. At t = 0 s the plasma discharge was initiated. The APPJ nozzle is shown at top center of each image [55] © Deutsche Physikalische Gesellschaft. Reproduced by permission of IOP Publishing. CC BY-NC-SABack to article page