Patent ID: 8728588

Claim:
Method for treating a surface of at least one part having multiple faces with a non-uniform plasma generated with elementary plasma sources by distributed electron cyclotron resonance, comprising: subjecting the at least one part to at least one movement of revolution with regard to at least one fixed linear row of spaced apart elementary plasma sources, each source comprising a coaxial waveguide and an end fitting containing a magnet for electron cyclotron resonance, setting spacing between adjacent sources of the at least one fixed linear row between a minimum distance of about twice a diameter of the magnet, and a maximum distance Dmax determined by the formula: D ⁢ ⁢ max = 2 ⁢ R ⁢ ⁢ max o ⁢ P o P where: R max o is about 5 cm, P o is 2.10 −3 mbar, and P is working pressure in mbar, the at least one fixed linear row of elementary plasma sources being disposed parallel to an axis of revolution of the at least one part and providing uniform treatment in volume of the at least one part although the plasma itself is not uniform in volume, whereby uniform surface treatment on the multiple faces of the at least one part is realized without requiring modification of equipment geometry according to geometry of the at least one part.