Measurement of Iron Atoms in an Atmospheric Pressure Discharge by LIF

Abstract

Iron atoms scattered from electrodes by pulsed arc discharge were measured by laser-induced fluorescence with a tunable KrF excimer laser at atmospheric pressure. The resultant images of two dimensional distribution of iron atoms showed that iron atoms were generated spherically with a diameter of about 2mm from both of needle electrodes. Then the iron vapor propagated along the discharge path keeping its spherical shape with a velocity of about 100 m/s.