Table 7 Preview of Plasma-MDS metadata for the dataset “Correlation of helicality and rotation frequency of filaments in the ntAPPJ”²⁵.

1.1

plasma.source.name

ntAPPJ, HF plasma jet

1.2

plasma.source.application

PECVD

1.3

plasma.source.specification

AC, high frequency, atmospheric pressure, non-thermal

1.4

plasma.source.properties

Non-thermal atmospheric pressure plasma jet (capacitively coupled) operated in a self-organized regime (locked mode). Power: 7 to 9 W; Frequency: 27.12 MHz; Flow rate: 400 to 800 sccm argon; Electrodes: ring configuration, distance 5 mm, width 5 mm; Capillary: inner diameter 4 mm, outer diameter 6 mm

1.5

plasma.source.procedure

The measurements occur 30 minutes after temperature conditioning of the plasma source for each parameter setting.

2.1

plasma.medium.name

Ar

2.2

plasma.medium.properties

Flowrate: 0.4 to 0.8 slm; Pressure: 1 bar; Temperature: 300 to 1000 K; Purity: argon 6.0

2.3

plasma.medium.procedure

Standard conditions of the argon gas are assured.

3.1

plasma.target.name

—

3.2

plasma.target.properties

—

3.3

plasma.target.procedure

—

4.1

plasma.diagnostics.name

laser schlieren deflectometry, fast imaging

4.2

plasma.diagnostics.properties

The filament behaviour has been visualized optically by means of imaging. The LSD set-up consists of a He-Ne laser (Linos) and a high-speed CMOS camera (Photon Focus).

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4.3

plasma.diagnostics.procedure

The displacement of the laser spot on the image sensor of the camera is monitored directly. The laser beam is led perpendicular through the effluent region, close to the nozzle of the capillary (z = 0 mm). The output power of the laser is

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