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Capillary Dielectric Barrier Discharge: Transition from Soft Ionization to Dissociative Plasma (CROSBI ID 252632)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Klute, Felix David ; Michels, Antje ; Schütz, Alexander ; Vadla, Cedomil ; Horvatic, Vlasta ; Franzke, Joachim Capillary Dielectric Barrier Discharge: Transition from Soft Ionization to Dissociative Plasma // Analytical chemistry, 88 (2016), 9; 4701-4705. doi: 10.1021/acs.analchem.5b04605

Podaci o odgovornosti

Klute, Felix David ; Michels, Antje ; Schütz, Alexander ; Vadla, Cedomil ; Horvatic, Vlasta ; Franzke, Joachim

engleski

Capillary Dielectric Barrier Discharge: Transition from Soft Ionization to Dissociative Plasma

A capillary He dielectric barrier discharge was investigated with respect to its performance as a soft or dissociative ionization source. Spatiotemporal measurements of the plasma emission showed that in one voltage duty cycle the plasma evolved from a soft to dissociative ionization source. At the earliest time, the soft plasma was generated between the electrodes as well as outside the capillary forming the plasma jet. It was characterized by significant radiation arising only from He and N2+, which are known to be important in the process of the soft ionization of the analyte. Later in time, the plasma capable of dissociating molecules develops. It is characterized by appreciable radiation from analyte dissociation products and is restricted to the interelectrode region in the capillary. Thus, for the soft ionization purposes, it is feasible to introduce the analyte exclusively in the plasma jet. For elemental analysis, the interelectrode plasma is appropriate.

Capillary DBD plasma

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Podaci o izdanju

88 (9)

2016.

4701-4705

objavljeno

0003-2700

10.1021/acs.analchem.5b04605

Povezanost rada

Fizika

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