6533b7dafe1ef96bd126e294

RESEARCH PRODUCT

Breakdown transient study of plasma distributions in a 2.45 GHz hydrogen discharge

Osvaldo Daniel CortázarH. KoivistoA. Megía-macíasOlli Tarvainen

subject

PhysicsNuclear and High Energy Physicsta114Hydrogenchemistry.chemical_elementPlasmaPlasma diagnosticsIonECR ion sourceschemistryPhysics::Plasma PhysicsIonizationECR plasma breakdownPlasma diagnosticsAtomic physicsInstrumentationMicrowaveExcitationVisible spectrum

description

Plasma distribution transients associated with the breakdown of a 2.45 GHz hydrogen discharge similar to high current microwave ion sources are studied by means of an ultra-fast frame image acquisition system in visible light range. Eight different plasma distributions have been studied by photographing the 2D projections of the discharge through a transparent plasma electrode. The temporal evolution of images in Balmer-alpha and Fulcher band wavelengths have been recorded associated to atomic and molecular excitation and ionization processes. Some unexpected plasma distributions transient behaviors during breakdown are reported.

yearjournalcountryeditionlanguage
2015-05-01Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
https://doi.org/10.1016/j.nima.2015.01.079