6533b7d8fe1ef96bd126ab85
RESEARCH PRODUCT
Time Evolution of High-Energy Bremsstrahlung and Argon Ion Production in Electron Cyclotron Resonance Ion-Source Plasma
O. TarvainenH. KoivistoP. SuominenPauli PeuraPeter M. JonesTaneli KalvasT. Ropponensubject
PhysicsNuclear and High Energy PhysicsArgonAstrophysics::High Energy Astrophysical PhenomenaCyclotronBremsstrahlungchemistry.chemical_elementPlasmaCondensed Matter PhysicsElectron cyclotron resonanceIon sourcelaw.inventionIonchemistryPhysics::Plasma PhysicslawPlasma diagnosticsAtomic physicsdescription
Bremsstrahlung radiation measurement is one of the most commonly used plasma-diagnostics methods. Most of the bremsstrahlung measurements with electron cyclotron resonance ion sources (ECRISs) have been performed in continuous-operation mode yielding information only on the steady-state bremsstrahlung emission. This paper describes results of bremsstrahlung and argon ion-current measurements with the JYFL 14-GHz ECRIS operated in a pulsed mode. The bremsstrahlung radiation was studied as a function of neutral-gas pressure and radio frequency power. The timescale of ECRIS bremsstrahlung production is compared to ion-production timescale for different charge states of argon for the first time. It was observed, for example, that the ion currents of different charge states reach the steady state before the bremsstrahlung emission rate saturates.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-11-01 | IEEE Transactions on Plasma Science |