Patent ID: 8501528

Claim:
A radiofrequency plasma reactor comprising a vacuum recipient and therein a first electrode arrangement having a first electrode surface and a second electrode arrangement having a second electrode surface, said first and second electrode surfaces being distant from each other and facing each other, thereby defining a plasma discharge space there between, the first electrode arrangement comprising a metal Rf supply electrode and dielectric spacing, the metal Rf supply electrode being operationally connectable to a first pole of an Rf power supply and having a metal surface extending substantially along and distant from said first electrode surface, the dielectric spacing being upon said metal surface and extending substantially along said metal surface, a thickness of said dielectric spacing being perpendicular to said metal surface and varying along said metal surface, said second electrode arrangement being operationally connectable to a second pole of an Rf power supply, wherein said first electrode surface comprises a multitude of surfaces of a multitude of metal members residing on said dielectric spacing, at least the majority of said members being mounted in an electrically floating manner.