Abstract
The aim of this study is to investigate the behavior of ions in the axisymmetric jet. The experiment was performed in the flow measurement by hot wire anemometer and the density measurement with an ion counter which was able to measure the number of ions in air. The distribution of the ion density was similar with the velocity profile in the axisymmetric jet. This suggests that the behavior of ions was influenced by fluid force rather than by the coulomb's force.
