Berlin 2014 – wissenschaftliches Programm
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K: Fachverband Kurzzeitphysik
K 4: Laser-Materie-Wechselwirkung und Laseranwendungen I
K 4.2: Vortrag
Dienstag, 18. März 2014, 11:30–11:45, SPA SR203
Laser-induced shock waves in glass capillary — Marvin Tammen1,2, Christian Menninger1,2, •Yun Kai1, Bernd Meyerer1, Walter Garen1, and Ulrich Teubner1,2 — 1Institut für Lasertechnik Ostfriesland, Hochschule Emden/Leer, University of Applied Sciences, Constantiaplatz 4, 26723 Emden, Germany — 2Institut für Physik, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany
Shock waves in spherical geometry in liquid can be generated after the optical breakdown induced by intense laser pulses. In the scope of the on-going experiments, the optical breakdown is designed to occur in different glass capillaries (several millimeters as inner diameter), which are placed in a glass cuvette filled with liquid (distilled water in present work). External pressure is applied into the capillary to control the position of the air-water boundary. The propagation of the shock waves within the capillary and the resulting evaporation process are investigated by applying optical ultra short time measurement techniques. The study of the velocity of the shock waves propagating in capillaries of different diameters and in different liquids is carried out. The acquired results contribute to the further understanding of shock wave dynamics, which is of interest for applications such as micro fluidics, nano technology, medical physics and many other topics.