6533b870fe1ef96bd12cfd67
RESEARCH PRODUCT
Investigation into the gas mixing effect in ECRIS plasma using Kα and optical diagnostics
Fhumulani NemulodiRainer ThomaeRisto KronholmKalvas TaneliPeter JonesHannu KoivistoM. SakildienJoele MiraOlli Tarvainensubject
Materials scienceta114ionitsyklotronitPlasmaplasmafysiikkaGas mixingIonNuclear physicsOptical diagnosticsIon coolingionsOptical emission spectroscopycyclotron resonanceState distributionplasmaplasma (kaasut)Beam (structure)description
Mixing a lighter gas species into the plasma of an ECRIS is known to enhance high charge state production of the heavier gas species. With this investigation, Kα diagnostics, optical emission spectroscopy and the measured charge state distribution of the extracted beam were combined to shed more light on the physics governing this phenomenon. Kα diagnostics data from two ion sources, the JYFL 14 GHz ECRIS and the GTS at iThemba LABS, are presented to gain confidence on the observed trends. The results seem to favor ion cooling as the most likely mechanism responsible for the favorable influence of the gas mixing.Mixing a lighter gas species into the plasma of an ECRIS is known to enhance high charge state production of the heavier gas species. With this investigation, Kα diagnostics, optical emission spectroscopy and the measured charge state distribution of the extracted beam were combined to shed more light on the physics governing this phenomenon. Kα diagnostics data from two ion sources, the JYFL 14 GHz ECRIS and the GTS at iThemba LABS, are presented to gain confidence on the observed trends. The results seem to favor ion cooling as the most likely mechanism responsible for the favorable influence of the gas mixing.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 | AIP Conference Proceedings |