Experimental investigations of gas transport systems

The supply of single radioactive atoms or molecules (with gas as a carrying agent) to measuring instruments is discussed. Gas transport systems are of simple construction. When half life of the product is shorter, the transport time from reaction chamber to collection film has to be decreased. The carrying particles often get stuck in the tube wall because of its turbulent oscillation motion. The fast gas transport system and the current path for compressible and viscous medium and transport time measurements with electrically charged aerosols is pointed out. It is shown that the expected transport efficiency of radioactive particles and the strong yield changes in the relationships of transport time with half life time is an interesting method for calculating the separation process in two phase flow.