Abstract: The exit of a strong shock wave to the free surface (FS) of a metal sample leads to the ejection of a cloud of particles from the front of the FS (the so-called "dusting"). The destruction of the FS into microparticles occurs due to the presence of small inhomogeneities, in which stress concentration occurs, leading to the detachment of microparticles. Interest in this phenomenon is associated with the influence of the "dust" emission on the results of measurements of the dynamics of the motion of the SP using shadow, electric contact and laser methods of motion registration. Experimental study of these processes is very difficult due to the small size of microparticles (1 - 100 microns) and high speeds of their flight (1-5 km/s). The most commonly used systems are laser systems (PDV) and piezo sensors. Their advantages are multi-channel and the possibility of transportation. And the disadvantages are the low accuracy and complexity of calibrating the measured readings (data). Synchrotron radiation makes it possible to obtain many radiographic images (movies) of the process of generation and dynamics of a cloud of microparticles. The report presents the results of simultaneous measurements of the dynamics of a dust cloud by three methods - laser PDV, piezo sensors and synchrotron cinema. It is shown that integrally all methods are equivalent, but "fast" measurements of cloud density are visible only with SR radiography.

Cite: Ten K. , Pruuel E. , Kashkarov A. , Rubtsov I. , Studennikov A. , Tolochko B. , Shekhtman L. , Garmashev A. , Petrov P. , Smirnov E. , Novoselov K.
Investigation of Dusting Using Synchrotron Radiation
In compilation Book of abstracts of International Conference "Synchrotron and Free Electron Laser Radiation: Generation and Application". – ИЯФ СО РАН., 2022. – C.18. – ISBN 9785904968083. РИНЦ

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49351446

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