简介:Anovelsurfacewaveplasma(SWP)sourceexcitedwithcylindricalTeflonwaveguidehasbeendevelopedinourpreviouswork.Theplasmacharacteristicshavebeensimplystudied.Inthiswork,ourexperimentaldevicehasbeensignificantlyimprovedbyreplacingtheTeflonwaveguidewithaquartzrod,andthenbettermicrowavecouplingandhighergaspuritycanbeobtainedduringplasmadischarge.Theplasmaspatialdistributions,bothinradialandaxialdirections,havebeenmeasuredandtheeffectofgaspressurehasbeeninvestigated.Plasmadensityprofilesindicatethatthisplasmasourcecanproduceuniformplasmainanaxialdirectionatlowpressure,whichshowsitspotentialinplasmaprocessingonacurvedsurfacesuchasaninnertubewall.Asimplifiedcircularwaveguidemodelhasbeenusedtoexplaintheprincipleofplasmaexcitation.Thedistinguishingfeaturesandpotentialapplicationofthiskindofplasmasourcewithahardwareimprovementhavebeenshown.