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Laser generated plasma followed by shocks and increasing cavitation bubble in a mini-glass tube
(2019)
There have been tried many types of micro-capillaries, square or round and with different
sizes of inner diameter. In which a cavitation bubble was created. The purpose of these
experiments was to observe the velocity of the shock wave just after the initial cavitation
bubble the rebound ones inside the micro-capillary and outside the micro-capillary. The most
of the method was spark to induced superheat limit of liquid. Here we used the laser-induced
breakdown (LIB) method. There were described the set cavitation setting that affects the
stability and size of the bubble. We used here shadowgraphy setup for visualized the
cavitation bubbles and shock wave with a camera. There were observed time development of
the shock wave velocity; the velocity of the initial shock wave inside the micro-capillary was
higher than the shock velocity outside the micro-capillary