6533b7d5fe1ef96bd12654e5

RESEARCH PRODUCT

Periodic Beam Current Oscillations Driven by Electron Cyclotron Instabilities in ECRIS Plasmas

Olli TarvainenTaneli KalvasHannu KoivistoJani KomppulaRisto KronholmJanne LaulainenI. IzotovD. MansfeldV. SkalygaV. Toivanen

subject

cyclotron instabilitiesPhysics::Plasma PhysicsAstrophysics::High Energy Astrophysical PhenomenaPhysics::Space PhysicsECRIS plasma

description

Experimental observation of cyclotron instabilities in electron cyclotron resonance ion source plasma operated in cwmode is reported. The instabilities are associated with strong microwave emission and a burst of energetic electrons escaping the plasma, and explain the periodic oscillations of the extracted beam currents. The instabilities are shown to restrict the parameter space available for the optimization of high charge state ion currents. nonPeerReviewed

http://urn.fi/URN:NBN:fi:jyu-201512294135