Hydrodynamic study of a microwave plasma torch K. Gadonna, O. Leroy, T. Silva, P. Leprince, C. Boisse-Laporte and L.L. Alves Eur. Phys. J. Appl. Phys., 56 2 (2011) 24008 Published online: 28 October 2011 DOI: 10.1051/epjap/2011110161