Sheath structure in plasma with two species of positive ions and secondary electrons

Zhao Xiao-Yun^{1, 2, 3, 4}, Xiang Nong^{1, 4, †,}, Ou Jing^{1, 4}, Li De-Hui^{1, 4}, Lin Bin-Bin^{1, 4}

Variations of sheath width ξ_w with relative concentration between two ion species for different (a) ion species (b) charge numbers with γ = 0, γ = 0.5, and γ = 0.8.