Open AccessHigh resolution technique for studying the energy exchange near the shock wave front
Author(s) -
Vadim S. Ziborov,
V. P. Efremov,
М. М. Кузнецов,
В. Е. Фортов,
T. A. Rostilov,
В. В. Шумова
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1385/1/012042
Subject(s) - shock wave , atomic physics , shock tube , ionization , mach number , front (military) , electron , shock (circulatory) , molecular physics , chemistry , analytical chemistry (journal) , physics , mechanics , ion , nuclear physics , meteorology , medicine , organic chemistry , chromatography
The structure and properties of the shock wave front propagating in binary gas was investigated by multi-channel emission spectroscopy and electrostatic probe located in a flow core. The experimental conditions allowed to consider the energy exchange processes in the front like interaction of isolated cold heavy molecules Mo (CO) 6 with shock wave front of light noble gas (He, Ar). Measurements were carried out in a weak incident shock waves (Mach number M = (2.5 ÷ 3.6) in the high vacuum shock tube at equilibrium temperature of 850–1400 K and pressure of 0.1–1.1 bar, Mo(CO) 6 concentration 5.0 × 10 13 −3.0 × 10 14 cm −3 . An influence of heavy molecules on thermodynamics was negligible and free paths of “heavy” molecules between collisions “heavy-heavy” were longer then 1 mm. Nearby shock wave front the conductivity and the electron precursor zones caused by ionization and charge separation were detected and measured. The dependence of probe current on the energy of pair collisions was found. The length of charge separation in SW front was measured and free electrons concentration was estimated.