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The electron density is one of the crucial parameters in plasma plume, whichplays a major role in producing the key reactive species required forbiological and industrial applications. In this work, experiments are performedto estimate the spatial variation of plasma density in a steady plume. Thetime-resolved images obtained from the ICCD camera, plume current measurementsare utilized for estimating the plasma density. We observed the plasma densityincreases from the glass nozzle to the plume tip. This increase in plasmadensity is due to the combined effect of reduction of drift velocity, charge,and area confinement of plume. Further, the intensity plots of the ICCD cameraimages obtained with larger exposure time validate the increased density at theplume tip. The plasma density along the plume gives information about theapproximation to the plume exposure time desired and the impact it creates onthe very sensitive targets. The spatial variation of plasma density in a plumeis a futuristic requirement for several biological and industrial applicationsconsidering a single plasma device.

Study of plume dynamics and plasma density during its expansion