Sheath structure in plasma with two species of positive ions and secondary electrons
Zhao Xiao-Yun1, 2, 3, 4, Xiang Nong1, 4, †, , Ou Jing1, 4, Li De-Hui1, 4, Lin Bin-Bin1, 4
       

Secondary electron densities at the sheath edge varying with relative concentration between two ion species for different (a) ion species with Z2 = 1 (b) charge number Z2 = 2 (Ar2+) and Z2 = 3 (Ar3+) for γ = 0.8.