Impact of Lighter Ion Concentration on Entry Flow in a Multiple Ion-Species Plasma Sheath

Prabhat Dubey¹ , Nishchhal Yadav² , Devendra Sharma³

1. School of Studies in Physics, Vikram University, Ujjain, India.
2. School of Studies in Physics, Vikram University, Ujjain, India.
3. Institute for Plasma Research, Bhat, Gandhinagar, India.

Correspondence should be addressed to: pdubeujjain@yahoo.co.in.

Section:Research Paper, Product Type: Isroset-Journal
Vol.5 , Issue.4 , pp.21-23, Aug-2017

Online published on Aug 20, 2017

Copyright © Prabhat Dubey, Nishchhal Yadav, Devendra Sharma . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
In many modern application of positive and negative ion sources, ranging from fusion plasma experiments to surface processing of materials by plasma, substantial increase in efficiency is observed achievable by using complex mixtures of neutral species to generate the source plasma. In the present study we obtain and characterize entry flow combinations from the linear dispersion of the a collisional multispecies plasma, as a function of lighter species’ concentration. The entry flow velocity, normalized to acoustic velocity of one the species, shows critical variation in the entry flow velocity of the relatively heavier species whose acceleration is desired by using a mixed concentration of ions in the source plasma.

Key-Words / Index Term :
Multiple Ion-Species, Finite Sheath Dimensions, Plasma

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