Lasers based on electrodynamically dispersed media |
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Authors: | Yu I Anisimov A Ch Mashek K E Metel’skii and E L Ryabchikov |
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Institution: | 1.St. Petersburg State University,St. Petersburg,Russia |
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Abstract: | We demonstrate the possibility of creating a suspension of active-media particles in a discharge tube by using an electrodynamic
dispersing system. An electric discharge in an electrodynamically dispersed system of 30-μm Cu particles was studied. The
velocity of Cu (30 μm), Al (30 μm), and W (6-μm flakes) particles was measured at atmospheric pressure using a laser Doppler
velocimeter. The velocities were found to be in the 0.1−5-m/s range. The electric field strength required to levitate Cu,
Al, and W particles was studied as a function of buffer gas (air) pressure in the range from 2 × 10−2 Torr to 1 atm. It is shown that powders can be suspended with the help of electrodynamic dispersing system at air pressure
below 0.1 Torr or above 100 Torr. |
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