Open AccessInvestigation of the elemental composition of samples after exposure to θ-pinches in the vicinity of periodic discharges in a flow of liquid
Author(s) -
A. V. Nesterovich
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1238/1/012039
Subject(s) - composition (language) , distilled water , chemistry , analytical chemistry (journal) , copper , chemical composition , tap water , water flow , isotope , environmental chemistry , chromatography , geology , soil science , philosophy , linguistics , physics , organic chemistry , environmental engineering , quantum mechanics , engineering
The article presents the results of laser mass-spectrometric analysis of surface of the samples, exposed to long-term treatment with high current discharges in the fluid flow (water with admixtures of different composition). It has been found, that the elemental composition of the surface of the metal, in particular, oxygen-free copper, can vary considerably (up to 35 at.%) compared to the original composition (99.8 at.%) to a depth of up to 10 μm. Change of the isotopic composition (isotope concentration of 65 amu may amount to 38.1% while the normal rate is equal to 30.6%) has been indicated. Composition of water (distilled water, tap water, saline water) does not affect the results. The concentration of elements, such as Cl, may exceed the original concentration by 3,000 times. At a depth of 10 μm, the composition is similar to the original one (before the exposure).