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
       

Variations of critical value of SEE coefficient with relative concentration between two ion species for different (a) ion species at Z2 = 1 and (b) charge number Z2 = 2 (Ar2+) and 3 (Ar3+).