6533b7cffe1ef96bd1258538

RESEARCH PRODUCT

Photoelectron Emission from Metal Surfaces Induced by Radiation Emitted by a 14 GHz Electron Cyclotron Resonance Ion Source

Hannu KoivistoJanne LaulainenOlli TarvainenJ. KomppulaTaneli KalvasRisto Kronholm

subject

010302 applied physicsMaterials scienceta114Physics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaCyclotron resonanceBremsstrahlungFOS: Physical sciencesPlasmaElectronphotoelectron emissionRadiation01 natural sciences7. Clean energyElectron cyclotron resonanceIon sourcePhysics - Plasma Physics010305 fluids & plasmasPlasma Physics (physics.plasm-ph)Physics::Plasma Physics0103 physical scienceselectron cyclotron resonance ion sourcesPlasma diagnosticsAtomic physicsInstrumentation

description

Photoelectron emission measurements have been performed using a room-temperature 14 GHz ECR ion source. It is shown that the photoelectron emission from Al, Cu, and stainless steel (SAE 304) surfaces, which are common plasma chamber materials, is predominantly caused by radiation emitted from plasma with energies between 8 eV and 1 keV. Characteristic X-ray emission and bremsstrahlung from plasma have a negligible contribution to the photoelectron emission. It is estimated from the measured data that the maximum conceivable photoelectron flux from plasma chamber walls is on the order of 10% of the estimated total electron losses from the plasma. peerReviewed

yearjournalcountryeditionlanguage
2015-09-01
http://arxiv.org/abs/1509.00259