Speaker
Description
At fast acceleration of metals, a cloud of microparticles (dust cloud) appears in front of the surface. Work on the study of these processes using Synchrotron Radiation (SR) was carried out at the Budker Institute of Nuclear Physics (Novosibirsk) [1,2].
In this work, the particle flux from shock-loaded tin was recorded using X-ray radiography, but also synchronously with another 4-channel Photon Doppler Velocimetry (PDV) laser complex and piezoelectric sensors.
The use of piezosensors and laser complexes PDV is widely used due to the availability and simplicity of obtaining information on the dynamic flows of microparticles. It is advisable to use these techniques in conjunction with other techniques that can evaluate mass and flow rates. The use of SR radiography is an ideal complement to them. Comparison of data on the flow of microparticles (speed and mass distributions) with the magnitude of the signal from the piezoelectric sensor makes it possible to independently calibrate the sensor readings. The simultaneous use of modern techniques has allowed not only to measure the mass distribution along the cloud, but also significantly increase the reliability of the measured values.
The flows of microparticles from grooves (roughnesses) with sizes from Rz4 to Rz80 made on the surface of tin were investigated. The shock wave was created by pressed octogen. The data obtained are necessary for the numerical simulation of particle ejection processes.
1. K.A. Ten, E.R. Pruuel, A.O. Kashkarov, I.A. Rubtsov, M.V. Antipov, A.B. Georgievskaya, A.L. Mikhailov, I.A. Spirin, V.M. Aulchenko, L.I. Shekhtman, V.V. Zhulanov, B.P. Tolochko . Detection of Particle Ejection from Shock-Loaded Metals by Synchrotron Radiation Methods. // Combustion, Explosion, and Shock Waves. Vol. 54. No. 5. pp. 606-613, 2018.
2. K A Ten, E R Pruuel, A O Kashkarov, I A Rubtsov, M V Antipov, A B Georgievskaya, A L Mikhailov, I A Spirin, L I Shekhtman, V V Zhulanov and B P Tolochko. Dynamic registration of ejection from shock-loaded metals // Journal of Physics: Conference Series, Volume 1147, (2019) 012020 doi:10.1088/1742-6596/1147/1/012020
