Patent ID: 9721757
Date: 2017-08-01
CPC Classifications: H01J

Claim:
1. A modular plasma source assembly comprising: an elongate housing having a side wall, an electrically grounded front face and a gas volume; an elongate RF hot electrode within the housing, the elongate RF hot electrode having a front face, a back face, elongate sides and a first end and a second end defining an elongate axis, the elongate RF hot electrode spaced from the front face to form a gap between the front face of the RF hot electrode and the front face of the elongate housing; an end dielectric in contact with each of the first end and the second end of the RF hot electrode and between the RF hot electrode and the side wall; a sliding ground connection positioned at one or more of the first end and the second end of the RF hot electrode opposite the end dielectric, the sliding ground connection isolated from direct contact with the RF hot electrode by the end dielectric; and a coaxial RF feed line passing through the elongate housing, the coaxial RF feed line including an outer conductor and an inner conductor separated by an insulator, the outer conductor in communication with electrical ground and the inner conductor in electrical communication with the elongate RF hot electrode.