Summary:
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.
Keywords: ECR ionsources; ECR plasma breakdown; Plasma diagnostics;
JCR Impact Factor and WoS quartile: 1,200 - Q2 (2015); 1,400 - Q3 (2022)
DOI reference:
https://doi.org/10.1016/j.nima.2015.01.079
Published on paper: May 2015.
Published on-line: February 2015.
Citation:
O.D. Cortázar, A. Megia-Macías, O. Tarvainen, H. Koivisto, Breakdown transient study of plasma distributions in a 2.45 GHz hydrogen discharge. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 781, pp. 50 - 56, May 2015. [Online: February 2015]
