大氣壓輝光放電實(shí)驗(yàn)研究.pdf

1、中國科學(xué)技術(shù)大學(xué)碩士學(xué)位論文大氣壓輝光放電實(shí)驗(yàn)研究姓名：劉鵬申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：等離子體物理指導(dǎo)教師：詹如娟2002.6.1AbstractTheresearchonatmosphericpressureplasmasourcesisallimportantfieldinindustrialplasmaengineeringThermalplasmaprocessingwitharcsorplasmatorches，coronatr

2、eatment，andsurfacetreatmentwithdielectricbarrierdischargeshasbeenCOnductedatatmosphericpressureHoweverconversionofvacuumglowdischargestosimilardischargeatatmosphericpmssurehasbarelybegunComparedtootherformsofatmosphericp

3、ressureplasmatherelativelylongduration，uniformityandlowto—moderatearealpowerdensitiesofatmosphericpressureglowdischarge(APGD)highlyrecommenditforindustrialapplicationsRecentlytherehasbeenincreasinginterestinatmosphericdi

4、schargesburningintheglowdischargemodeAsetofAPGDexperimentalsetuphasbeendevelopedinthisstudyItscharacteristicshavebeeninvestigatedindetailandunderdifferentelectrodesWehaveobtainedAPGDinhelium，themixtureofargonwithalcohol，

5、nitrogenandairbetweentwoplaneparallelelectrodesUsuallyasinglelargepulseinthegrowingpartoftheappliedvoltageperhalfcyclecharacterizesthedischargecurrentsofanAPGDHoweverweobtainedastableAPGDinheliumandthemixtureofargonwitha

6、lcoh01inwhichthedischargestartedinthedecreasingpartItisfoundthatthesinglecurrentpulsemovesfromthegrowingparttothedecreasingpartoftheappliedvoltagewhiletheSOurCefrequencyincreasingandtheappliedvoltagekeptconstantIfthesour

7、cefrequencyiskeptconstantandtheappliedvoltageisdecreased，thecurrentpulsewillshowthesamemovingtrendAtmosphericpressureglowdischargeinheliumisobtainedandinvestigatedwhenoneofthetwoplane—parallelelectrodesisreplacedbysingle

8、—pinormultipinItisfoundthatthe‘‘residualcurrentpulse’’willchangewiththeappliedvoltageandsourcefrequencywhenoneoftheelectrodesissingle—pinIfthesourcefrequencyiskeptconstantthe“residualcnrrentpulse’willincreasewiththeincre

9、asingvoltageIftheappliedvoltageiskeptconstantthe“residualcurrentpulse”willincreasewiththedecreasingsourcefrequencyWealsoobtainedAPGDinairwithpectinateandspiralelectrodesBesidestheAPGDreactorsystem，wealsodesigntwotypesofs