Fig. 2
(a) Block Diagram showing the configuration of the non-thermal plasma treatment system. Indicating the layout of components including both the microwave energy and radio frequency (RF) energy sources, the microcontroller and user interface, power combiner with low pass and high pass filters, the applicator device and argon gas supply. (b) Schematic of the plasma applicator used to direct microwave or RF from the energy generator to the surface being treated. The applicator enables argon gas to be brought into close proximity with the generated plasma within a bespoke antenna section that encompasses a silver coated steel top hat antenna design at the distal end where the gas flows to produce a circumferential plasma that couples with the inner surface of the EMB tubing. The applicator can then be advanced into the EBM tubing via a motorised applicator driver at a defined speed.
