| 摘要 |
FIELD: physics. ^ SUBSTANCE: method involves freeing microparticles from the target surface and transferring the microparticles through a vortex directed outwards towards the target surface. The vortex comes out of the outlet hole for providing a rotating gas stream directed outwards, which is concentric with a gas-air stream directed inwards. Said microparticles are then collected from the gas-air stream directed inwards. Relative speed across the unobstructed line of sight between the target surface and the outlet hole for the rotating gas stream directed outwards is greater than 15 cm/s. ^ EFFECT: high efficiency of collecting samples of target microparticles in motion. ^ 22 cl, 6 dwg |
