Propagation dynamics of a helium micro-tube plasma: Experiments and numerical modeling,"

Micro-Tube Plasmas (?TP) have been gaining attention for applications ranging from medicine to material science and analytical chemistry due their small size, low cost of operation flexibility. In the present work a specific ?TP, known as Flexible Micro Tube Plasma (F?TP) is investigated experimentally and, first time, numerically well. The creation, propagation mechanisms properties ionization waves inside microtube are during positive negative half cycle ?s square wave applied voltage. A two-dimensional (2D) axi-symmetric numerical model developed compared with optical emission spectroscopy showing good agreement. During plasma propagates an (or streamer) depositing charges on dielectric wall. neutralization those surface walls. different affect accumulation charges, induced electric field, speed waves. • efficient voltage ambient MS soft source. discharge rising resembles streamer. falling much faster leftover There glow electrode wall