Karel Vokurka

Experimental determination of temperatures in spark generated bubbles oscillating in water

Číslo: 2/2017
Periodikum: Acta Polytechnica
DOI: 10.14311/AP.2017.57.0149

Klíčová slova: spark generated bubbles; temperatures in bubbles; bubble oscillations, jiskra vytvořené bubliny; Teploty v bublinkách; Bublinové oscilace

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Anotace: The surface temperatures of the plasma core in the final stages of the first contraction phase of spark-generated bubbles oscillating under ordinary laboratory conditions in a large expanse of water are determined experimentally. The measurement method is based on an analysis of the optical radiation from the bubbles and on the assumption that the plasma core is radiating as a black-body. It is found that the maximum surface temperatures of the plasma core range 4300–8700 K.