Framework of unified nonequilibrium plasma model and collisional-radiative model for characterisation of microdischarges in metal vapours of Cd and Zn - datasetThe dataset provides the data related to the modelling of microdischarges in metal vapour of cadmium and zinc. The characterisation of the microdischarges was done in a framework that combined a unified nonequilibrium plasma model and a collisional-radiative model. The plasma model provided the basic plasma parameters (number densities of ground state neutral and singly charged species and their energies, electric field, discharge voltage). Number densities of excited atomic states were obtained on a second stage employing a collisional-radiative model and the already known plasma parameters. This modelling framework allowed one to obtain spatially and temporally resolved plasma parameters and the population of the excited atomic states in the entire discharge gap during the separation of the electric contacts. The modelling work was supported by electrical measurements, high-speed imaging and optical emission spectroscopy. The experimental findings enabled the calibration of the plasma model with respect to the discharge voltage and a qualitative and to some extent quantitative comparison of computed and measured spectral intensities.

]]>cadmiumcollisional-radiative modelmetal vapourmicrodischargenonequilibriumzincThermal Plasma Technologyd8420686-6b4f-40b9-b02d-2e13b4e3c08a2026-05-27T01:00:00+02:002026-05-27T23:02:39+02:00enINP, PTB BraunschweigFramework of unified nonequilibrium plasma model and collisional-radiative model - Ionisation rate coefficients (figure 1)Ionisation rate coefficients Kion,t [m^3/s] for Cd and Zn as a function of the electron temperature Te [eV]. The ionisation rate coefficients account for both direct and step-wise ionisation.

]]>2026-05-27T17:47:20+02:002026-05-27T23:02:39+02:00text/csvcsv399733https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-0Framework of unified nonequilibrium plasma model and collisional-radiative model - Thermo-field emission current density of electrons from a cathode made of Cd (figure 2a)Thermo-field emission current density of electrons jtf [A/m^2] from a cathode made of Cd as a function of the electric field E [V/m] for various surface temperatures. The emission current density of electrons jtf is computed by means of the Transferred Matrix Method for various values of the electric field E and temperature of the cathode surface.

]]>2026-05-27T18:17:29+02:002026-05-27T23:02:39+02:00text/csvcsv1169https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-1Framework of unified nonequilibrium plasma model and collisional-radiative model - Thermo-field emission current density of electrons from a cathode made of Zn (figure 2b)Thermo-field emission current density of electrons jtf [A/m^2] from a cathode made of Zn as a function of the electric field E [V/m] for various surface temperatures. The emission current density of electrons jtf is computed by means of the Transferred Matrix Method for various values of the electric field E and temperature of the cathode surface.

]]>2026-05-27T18:34:52+02:002026-05-27T23:02:39+02:00text/csvcsv766https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-8Framework of unified nonequilibrium plasma model and collisional-radiative model - Measured and computed in the UNEM voltage for microdischarges in metal vapours of Cd (figure 4a)Measured and computed in the UNEM voltage for microdischarges with gap lengths of 60, 100, and 160 μm in metal vapours of Cd. The experimental value are provided for a series of measurements with gap lengths around 60, 100, 160 µm, while the computed voltage is a single value for the corresponding gap length.

]]>2026-05-27T19:08:23+02:002026-05-27T23:02:39+02:00text/csvcsv1433https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-9Framework of unified nonequilibrium plasma model and collisional-radiative model - Measured and computed in the UNEM voltage for microdischarges in metal vapours of Zn (figure 4b)Measured and computed in the UNEM voltage for microdischarges with gap lengths of 60, 100, and 160 μm in metal vapours of Zn. The experimental values are provided for a series of measurements with gap lengths around 60, 100, 160 µm, while the computed voltage is a single value for the corresponding gap length.

]]>2026-05-27T19:20:57+02:002026-05-27T23:02:39+02:00text/csvcsv2994https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-2Framework of unified nonequilibrium plasma model and collisional-radiative model - Distributions of the electric potential for microdischarges in metal vapours of Cd (figure 5 Cd)Distributions of the electric potential for microdischarges with gap lengths of 60, 100, and 160 μm in metal vapours of Cd. The spatial distribution (distance z in meters) of the electric potential (volts) in microdischarges in metal vapours of Cd is shown for gap lengths of 60, 100 and 160 µm.

]]>2026-05-27T19:35:18+02:002026-05-27T23:02:39+02:00text/csvcsv164219https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-3Framework of unified nonequilibrium plasma model and collisional-radiative model - Distributions of the electric potential for microdischarges in metal vapours of Zn (figure 5 Zn)Distributions of the electric potential for microdischarges with gap lengths of 60, 100, and 160 μm in metal vapours of Zn. The spatial distribution (distance z in meters) of the electric potential (in volts) in microdischarges in metal vapours of Zn is shown for gap lengths of 60, 100 and 160 µm.

]]>2026-05-27T19:43:08+02:002026-05-27T23:02:39+02:00text/csvcsv334927https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-4Framework of unified nonequilibrium plasma model and collisional-radiative model - Density of space charge in the vicinity of the cathode in microdischarges of Cd (figure 6 Cd)Spatial distribution of the space charge density in the cathode sheath of the microdischarge in Cd. The distribution is along the distance z in m, the space charge density rho_q is in C/m^3 .

]]>2026-05-27T19:52:27+02:002026-05-27T23:02:39+02:00text/csvcsv13843https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-10Framework of unified nonequilibrium plasma model and collisional-radiative model - Density of space charge in the vicinity of the cathode in microdischarges of Zn (figure 6 Zn)Spatial distribution of the space charge density in the cathode sheath of the microdischarge in Zn. The distribution is along the distance z in m, the space charge density rho_q is in C/m^3 .

]]>2026-05-27T19:59:39+02:002026-05-27T23:02:39+02:00text/csvcsv48391https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-5Framework of unified nonequilibrium plasma model and collisional-radiative model - Distribution of the electron temperature in microdischages of metal vapour of Cd and Zn (figure 7a)Distribution of the electron temperature Te in microdischages of metal vapour of Cd and Zn for a gap length of 60 μm.

]]>2026-05-27T20:08:55+02:002026-05-27T23:02:39+02:00text/csvcsv170452https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-6Framework of unified nonequilibrium plasma model and collisional-radiative model - Distributions of the gas temperature in microdischages of metal vapour of Cd and Zn (figure 7b)Distributions of the gas temperature T in microdischages of metal vapour of Cd and Zn for a gap length of 60 μm.

]]>2026-05-27T20:10:38+02:002026-05-27T23:02:39+02:00text/csvcsv166143https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-7Framework of unified nonequilibrium plasma model and collisional-radiative model - Predicted number densities of electrons and excited states of Cd and Zn (figure 8)Predicted number densities of electrons and excited states of Cd and Zn for a gap length of 160 μm.

]]>2026-05-27T20:12:59+02:002026-05-27T23:02:39+02:00text/csvcsv337939https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-11Framework of unified nonequilibrium plasma model and collisional-radiative model - Temporal evolution of the spatially averaged line intensities in Cd (figure 9a)Temporal evolution of the spatially averaged line intensities Iqp(λ, t) in Cd . Gap lengths are related to the corresponding times for contact opening.

]]>2026-05-27T20:18:21+02:002026-05-27T23:02:39+02:00text/csvcsv273199https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-12Framework of unified nonequilibrium plasma model and collisional-radiative model - Temporal evolution of the spatially averaged line intensities in Zn (figure 9b)Temporal evolution of the spatially averaged line intensities Iqp(λ, t) in Zn. Gap lengths are related to the corresponding times for contact opening.

]]>2026-05-27T20:20:14+02:002026-05-27T23:02:39+02:00text/csvcsv278138https://www.inptdat.de/dataset/framework-unified-nonequilibrium-plasma-model-and-collisional-radiative-model-13DKANhttps://www.inptdat.de