{"help":"Return the metadata of a dataset (package) and its resources. :param id: the id or name of the dataset :type id: string","success":true,"result":[{"id":"b196cd4c-0a1a-4667-ab7d-b0e3a9901237","name":"atomic-oxygen-generation-atmospheric-pressure-rf-plasma-jets-driven-tailored-voltage","title":"Atomic oxygen generation in atmospheric pressure RF plasma jets driven by tailored voltage waveforms in mixtures of He and O\u003Csub\u003E2\u003C\/sub\u003E","author_email":"Ihor.korolov@rub.de","maintainer":"Research Data Repository","maintainer_email":"achim.vonkeudell@rub.de","license_title":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","notes":"\u003Cp\u003EAbsolute atomic oxygen densities measured space resolved in the active plasma volume of a COST microplasma reference jet operated in He\/O2 and driven by tailored voltage waveforms are presented. The measurements are performed for di\ufb00erent shapes of the driving voltage waveform, oxygen admixture concentrations, and peak-to-peak voltages. Peaks- and valleys-waveforms constructed based on di\ufb00erent numbers of consecutive harmonics, N, of the fundamental frequency f0 = 13.56 MHz their relative phases and amplitudes are used. The results show that the density of atomic oxygen can be controlled and optimized by voltage waveform tailoring (VWT). It is signi\ufb01cantly enhanced by increasing the number of consecutive driving harmonics at \ufb01xed peak-to-peak voltage. The shape of the measured density pro\ufb01les in the direction perpendicular to the electrodes can be controlled by VWT as well. For N \u0026gt; 1 and peaks-\/valleys-waveforms, it exhibits a strong spatial asymmetry with a maximum at one of the electrodes due to the spatially asymmetric electron power absorption dynamics. Thus, the atomic oxygen \ufb02ux can be directed primarily towards one of the electrodes. The generation of atomic oxygen can be further optimized by changing the reactive gas admixture and by tuning the peak-to-peak voltage amplitude. The obtained results are understood based on a detailed analysis of the spatio-temporal dynamics of energetic electrons revealed by phase resolved optical emission spectroscopy (PROES).\u003C\/p\u003E\n","url":"https:\/\/rdpcidat.rub.de\/dataset\/atomic-oxygen-generation-atmospheric-pressure-rf-plasma-jets-driven-tailored-voltage","state":"Active","log_message":"Update to resource Figure 13: Normalized spatio-temporal plots of the electron impact excitation rate ","private":true,"revision_timestamp":"Sun, 03\/21\/2021 - 19:32","metadata_created":"Tue, 01\/26\/2021 - 12:58","metadata_modified":"Sun, 03\/21\/2021 - 19:32","creator_user_id":"79009e3e-aee0-421f-9d06-2cafa8868bbd","type":"Dataset","resources":[{"id":"47b78994-d386-4a76-804e-94e3dec1f91c","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%203_0.zip","description":"\u003Cp\u003EMeasured 2D space resolved absolute density of atomic oxygen between the electrodes (x-direction) and the quartz walls (y-direction). The powered electrode is located at x = 0, while the grounded electrode is at x = 1 mm. The quartz walls are located at y = 0 mm and y = 1 mm. (a)-(c) Atomic oxygen density measured for di\ufb00erent numbers of consecutive driving harmonics, N, in the presence of \u201cpeaks\u201d waveforms. (d) Atomic oxygen density for N = 4 and a \u201cvalleys\u201d waveform. Note the di\ufb00erent ranges of the color scales. The base frequency is f0 = 13.56 MHz and the peak-to-peak value of the driving voltage waveform is kept constant at 500 V. The concentration of the O2 admixture is 0.5 %. The step resolution in x and y directions is set to 1 mm.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 13:04","name":"Figure 3: 2d space resolved density oxygen","mimetype":"application\/zip","size":"13.92 KB","created":"Tue, 01\/26\/2021 - 13:00","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 13:04"},{"id":"446db9d7-1075-4d75-aede-218a55055062","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%204_1.zip","description":"\u003Cp\u003E(a) Spatially resolved absolute densities of atomic oxygen obtained experimentally and computed from the numerical solution of eq. (8). (b) Peak and mean (spatially averaged) values of the atomic oxygen density obtained from the measured data and (c) normalized constant of proportionality used in equation (10) to relate the time averaged atomic oxygen source to the time averaged measured electron impact excitation rate as a function of the number consecutive driving harmonics, N, at y = 0.5 mm, z = -15 mm and for an O2 \ufb02ow corresponding to an admixture concentration of 0.5 % for \u201cpeaks\u201d-waveforms. The normalization is performed by dividing by the proportionality constant for the N = 1 case. The powered electrode is located at x = 0, while the grounded electrode is at x = 1 mm. The base frequency is f0 = 13.56 MHz and \u03c6pp = 500 V.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nFigure 4 a) exp\u003Cbr \/\u003E\nx (mm),y (exp atomic oxygen densities (cm-3)),\u003Cbr \/\u003E\nHarmonics used: 1(red), 2(olive green), 3(white) and 4(blue)\u003Cbr \/\u003E\nFigure 4 a) calc\u003Cbr \/\u003E\nx (mm),y (calc atomic oxygen densities (cm-3)),\u003Cbr \/\u003E\nHarmonics used: 1(red_dashed), 2(olive green_dashed), 3(white_dashed) and 4(blue_dashed)\u003Cbr \/\u003E\nFigure 4 b)\u003Cbr \/\u003E\nx (N),y (exp atomic oxygen densities (cm-3)),\u003Cbr \/\u003E\nFigure 4 c)\u003Cbr \/\u003E\nx (N),y (Normalized k)\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 13:10","name":"Figure 4: spatially resolved densities atomic oxygen","mimetype":"application\/zip","size":"9.85 KB","created":"Tue, 01\/26\/2021 - 13:02","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 13:10"},{"id":"6357e5ea-0f1f-4477-b897-773215b606d5","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%205_2.zip","description":"\u003Cp\u003ENormalized spatio temporal plots of the electron impact excitation rate from the ground state into the He-I 1s3s 3S1 level (d-f), measured for di\ufb00erent numbers of consecutive harmonics N (\u201cpeaks\u201d- waveforms) at \ufb01xed z = \u221215 mm. The base frequency is f0 = 13.56 MHz, \u03c6pp = 500 V, and the O2 admixture concentration is 0.5%.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nx [t\/TRf] , y[mm]\u003Cbr \/\u003E\n (Figure5a-5c): Exp Exc. Rate for O2-admixtures of 0.5% and N=1, N=2 and N=4 respectively\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 19:30","name":"Figure 5: electron impact excitation rate","mimetype":"application\/zip","size":"89.88 KB","created":"Tue, 01\/26\/2021 - 13:04","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 19:30"},{"id":"ecdc5912-6fe0-46af-addf-2880e1b2a882","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%206_1.zip","description":"\u003Cp\u003E(a)-(c) 2D spatial distribution of the atomic oxygen density inside the jet obtained from the numerical solution of equation (8) for di\ufb00erent numbers of consecutive harmonics, N. (d)-(f) Spatially resolved atomic oxygen production rate determined from equation (10). The base frequency is f0 = 13.56 MHz and the peak-topeak value of the driving voltage waveform is kept constant at 500 V. The concentration of the O2 admixture is 0.5 %.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\n(Figure6a-6c):\u003Cbr \/\u003E\nx [mm] , y[cm^-3], z[mm]\u003Cbr \/\u003E\nCalc spatial distribution of the atomic oxygen density for N=1, N=2 and N=4 respectively\u003Cbr \/\u003E\n(Figure6d-6f):\u003Cbr \/\u003E\nx [mm] , y[m^-3 s^-1]\u003Cbr \/\u003E\nCalc spatially resolved atomic oxygen production rate for N=1, N=2 and N=4 respectively\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 13:10","name":"Figure 6: 2D distribution atomic oxygen","mimetype":"application\/zip","size":"138.68 KB","created":"Tue, 01\/26\/2021 - 13:06","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 13:10"},{"id":"8bbc011c-50e6-4765-aa01-44af104097c3","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%207_2.zip","description":"\u003Cp\u003E(a)-(c) Measured spatially resolved absolute densities of atomic oxygen obtained for di\ufb00erent oxygen admixture concentrations. (d)-(f) peak and mean (spaceaveraged) values of the atomic oxygen density obtained from the measured space resolved data at \ufb01xed y = 0.5 mm and z = \u221215 mm. The columns show data for di\ufb00erent numbers of consecutive driving harmonics, N. The base frequency is f0 = 13.56 MHz and the peak-to-peak value of the driving voltage waveform is kept constant at 500 V. The concentration of the O2 admixture is varied from 0.05 % to 1.0\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\n(Figure7a-7c): Exp absolute densities of atomic oxygen for O2 admixtures varied from 0.05 % to 1.0% with N=1, N=2 and N=4 respectively\u003Cbr \/\u003E\nx [mm] , y[cm^-3]\u003C\/p\u003E\n\u003Cp\u003E(Figure7d-7f): Exp peak and mean (spaceaveraged) values of the atomic oxygen for N=1, N=2 and N=4 respectively\u003Cbr \/\u003E\nx [O2 add] , y[cm^-3]\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:46","name":"Figure 7: spatially resolved absolute densities atomic oxygen","mimetype":"application\/zip","size":"6.99 KB","created":"Tue, 01\/26\/2021 - 13:08","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:46"},{"id":"28a1f2f6-1b7e-43d9-b8e1-47e6506fbf8e","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%208_1.zip","description":"\u003Cp\u003ENormalized spatio-temporal plots of the electron impact excitation rate from the ground state of helium into He-I 1s3s 3S1 obtained experimentally for N = 1 (\ufb01rst row) and N = 4 (second row) and for di\ufb00erent concentrations of the O2 admixture (columns) at \ufb01xed z = \u221215 mm. The base frequency is f0 = 13.56 MHz and the peak-to-peak value of the driving voltage waveform is kept constant at 500 V. The powered electrode is located at x = 0, while the grounded electrode is at x = 1.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nx [t\/TRf] , y[mm]\u003Cbr \/\u003E\n (Figure8a8c): Exp Exc. Rate for O2-admixtures of 0.05%, 0.2% and 0.5% respectively with N=1\u003Cbr \/\u003E\n(Figure8d-8f): Exp Exc. Rate for O2-admixtures of 0.05%, 0.2% and 0.5% respectively with N=4\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:48","name":"Figure 8: Normalized spatio-temporal plots of the electron impact excitation ","mimetype":"application\/zip","size":"254.89 KB","created":"Tue, 01\/26\/2021 - 13:09","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:48"},{"id":"edac1560-6e22-4717-aa92-2a21eb1650ef","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%209_0.zip","description":"\u003Cp\u003EMeasured absolute density pro\ufb01les of He-I 1s2s 3S1 metastables between the electrodes - (a) for N = 1 and 0.05 % of O2, (b) and (c) for N = 4 and two di\ufb00erent concentrations of the O2 admixture of 0.05 % and 0.2 % at \ufb01xed z = \u221215 mm. The base frequency is f0 = 13.56 MHz and the peak-to-peak value of the driving voltage waveform is kept constant at 500 V.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nx [mm] , y [cm^-3]\u003Cbr \/\u003E\n(Figure9a-9b): Exp absolute density pro\ufb01les of He-I 1s2s 3S1 metastables for O2-admixtures of 0.05% and N=1 and N=4 respectively\u003Cbr \/\u003E\n(Figure9c): Exp absolute density pro\ufb01les of He-I 1s2s 3S1 metastables for O2-admixtures of 0.2% for N=4\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:45","name":"Figure 9: Measured absolute density pro\ufb01les of He-I 1s2s 3S1 metastables ","mimetype":"application\/zip","size":"4.31 KB","created":"Tue, 01\/26\/2021 - 13:13","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:45"},{"id":"0da4b352-b79e-430d-b74e-ae45a0334514","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure10.csv","description":"\u003Cp\u003ESpace and time averaged values of the atomic oxygen density obtained experimentally for di\ufb00erent numbers of driving harmonics, N, and molecular oxygen admixtures for \u201cpeaks\u201d-voltage waveforms at \ufb01xed z = \u221215 mm. The base frequency is f0 = 13.56 MHz and the peak-to-peak value of the driving voltage waveform is kept constant at 500 V.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nHarmonics used: 1-4\u003Cbr \/\u003E\n x (N),y (exp  mean atomic oxygen densities (cm-3)),\u003C\/p\u003E\n\u003Cp\u003EOxygen admixtures used: 0.05 %(red), 0.1 %(blue), 0.2 %(cyan), 0.4 %(olive green), 0.6 %(dark blue), 0.8 %(green), 1.0 %(orange)\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:44","name":"Figure 10: Space and time averaged values of the atomic oxygen density","mimetype":"text\/csv","size":"410 bytes","created":"Tue, 01\/26\/2021 - 13:13","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:44"},{"id":"eda20e3a-f993-4cd5-a0da-cbb6da284e14","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%2011_0.zip","description":"\u003Cp\u003E(b) Peak and (c) mean atomic oxygen densities as a function of the peak-to-peak value of the applied voltage waveform for di\ufb00erent N. The data are measured at positions y = 0.5 mm and z = -15 mm. The O2 admixture concentration is \ufb01xed at 0.5 %. The powered electrode is located at x = 0, while the grounded electrode is at x = 1 mm. The base frequency is f0 = 13.56 MHz. The waveform type is \u201cpeaks\u201d.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nFigure 11 a)\u003Cbr \/\u003E\nHarmonics used: 1(red), 2(olive green) and 4(blue)\u003Cbr \/\u003E\nVoltage is varied between 325 Vpp \u2013 550 Vpp\u003Cbr \/\u003E\nx (Vpp),y (exp peak atomic oxygen densities (cm-3)),\u003C\/p\u003E\n\u003Cp\u003EFigure 11 b)\u003Cbr \/\u003E\nHarmonics used: 1(red), 2(olive green) and 4(blue)\u003Cbr \/\u003E\nVoltage is varied between 325 Vpp \u2013 550 Vpp\u003Cbr \/\u003E\nx (Vpp),y (exp mean atomic oxygen densities (cm-3)),\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:43","name":"Figure 11: Peak and (c) mean atomic oxygen densities as a function of the peak-to-peak value of the applied voltage waveform","mimetype":"application\/zip","size":"1.48 KB","created":"Tue, 01\/26\/2021 - 13:15","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:43"},{"id":"9b9c92c1-c044-4a5b-aecc-4893c7494fb8","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%2012_0.zip","description":"\u003Cp\u003ESpatially resolved absolute densities of atomic oxygen obtained experimentally for N = 4 as a function of the peak-to-peak value of the driving voltage waveform. The data are measured at positions y = 0.5 mm and z = -15 mm. The O2 admixture concentration is \ufb01xed at 0.5 %. The powered electrode is located at x = 0, while the grounded electrode is at x = 1 mm. The base frequency is f0 = 13.56 MHz. The waveform type is \u201cpeaks\u201d.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nFigure 12 350V: (red) exp\u003Cbr \/\u003E\nFigure 12 450V: (white) exp\u003Cbr \/\u003E\nFigure 12 500V: (olive green) exp\u003Cbr \/\u003E\nFigure 12 550V: (blue) exp\u003Cbr \/\u003E\nx (mm),y (exp atomic oxygen densities (cm-3))\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:43","name":"Figure 12: Spatially resolved absolute densities of atomic oxygen","mimetype":"application\/zip","size":"2.79 KB","created":"Tue, 01\/26\/2021 - 13:16","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:43"},{"id":"a8b49659-1501-43f5-9927-69647b8215ab","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%2013_0.zip","description":"\u003Cp\u003ENormalized spatio-temporal plots of the electron impact excitation rate from the ground state into the He-I 1s3s 3S1 level (d-f), measured for di\ufb00erent peakto-peak voltage amplitudes at N = 4 (\u201cpeaks\u201d-waveforms) and z = \u221215 mm. The base frequency is f0 = 13.56 MHz and the O2 admixture concentration is 0.5%. The powered electrode is located at x = 0.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nCalculated data are marked as calc\u003Cbr \/\u003E\nx [t\/TRf], y[mm]\u003Cbr \/\u003E\n(Figure13a-13c): Exp Exc. Rate for O2-admixtures of 0.5% and N=4 with a peak-to-peak voltage of 350V, 450V and 550V respectively\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 19:32","name":"Figure 13: Normalized spatio-temporal plots of the electron impact excitation rate ","mimetype":"application\/zip","size":"140.33 KB","created":"Tue, 01\/26\/2021 - 13:17","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 19:32"}],"tags":[{"id":"89b6886a-7b69-4ffe-9826-8aa455632554","vocabulary_id":"2","name":"COST jet"},{"id":"2af5d325-26a2-40a8-b854-6a483281518e","vocabulary_id":"2","name":"PROES"},{"id":"4573ac2f-5122-470d-9d55-2b443aff0a43","vocabulary_id":"2","name":"absolute atomic oxygen densities"},{"id":"446ad084-b918-45ae-8ba8-33260134be3d","vocabulary_id":"2","name":"reactive gas"}],"groups":[{"description":"\u003Cp\u003EThe group \u0022Allgemeine Elektrotechnik und Plasmatechnik\u0022 at the faculty for engineering and information science.\u003C\/p\u003E\n","id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","image_display_url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/AEPT2.png","title":"AEPT","name":"group\/aept"}]}]}