Cleaning of niobium surface by plasma of diffuse discharge at atmospheric pressure

Frontiers in Theoretical and Applied Physics/UAE 2017

Tarasenko, V.F.^1,2 ; Erofeev, M.V.^1,2 ; Shulepov, M.A.^1 ; Ripenko, V.S.^1

Institute of High Current Electrons, 2/3 Akademichesky ave., Tomsk

634055, Russia^1

National Research Tomsk Polytechnic University, 30 Lenin ave., Tomsk

634050, Russia^2

关键词: Adhesion properties;    Auger spectrum;    Carbon contamination;    Niobium surfaces;    Plasma treatment;    Runaway electrons;    Surface characterization;    Surface free energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/869/1/012040/pdf
DOI  :  10.1088/1742-6596/869/1/012040

来源: IOP

【 摘 要 】

Elements composition of niobium surface before and after plasma treatment by runaway electron preionized diffuse discharge was investigated in atmospheric pressure nitrogen flow by means of an Auger electron spectroscopy. Surface characterizations obtained from Auger spectra show that plasma treatment by diffuse discharge after exposure of 120000 pulses provides ultrafine surface cleaning from carbon contamination. Moreover, the surface free energy of the treated specimens increased up to 3 times, that improve its adhesion property.