A particle-in-cell/Monte Carlo model of the Ar+ ion collection in He gas by a cylindrical Langmuir probe in the transition regimeF. Taccogna, S. Longo and M. CapitelliEur. Phys. J. AP, 22 1 (2003) 29-39DOI: https://doi.org/10.1051/epjap:2003015