{"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":"e8c69f1b-9224-4475-919f-d6bda667882e","name":"experimental-and-computational-investigations-electron-dynamics-micro-atmospheric-pressure","title":"Experimental and computational investigations of electron dynamics in micro atmospheric pressure radio-frequency plasma jets operated in He\/N_2 mixture","author_email":"korolov@aept.rub.de","maintainer":"Research Data Repository","maintainer_email":"achim.vonkeudell@rub.de","license_title":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","notes":"\u003Cp\u003EThe electron power absorption dynamics in radio frequency driven micro atmospheric pressure capacitive plasma jets are studied based on experimental phase resolved optical emission spectroscopy (PROES) and computational (PIC\/MCC) simulations. The jet is operated at 13.56 MHz in He with di\ufb00erent admixture concentrations of N_2 and at several driving voltage amplitudes. We \ufb01nd the spatiotemporal dynamics of the light emission of the plasma at various wavelengths to be markedly di\ufb00erent. This is understood by revealing the population dynamics of the upper levels of selected emission lines\/bands based on comparisons between experimental and simulation results. The populations of these excited states are sensitive to di\ufb00erent parts of the electron energy distribution function and to contributions from other excited states. Mode transitions of the electron power absorption dynamics from the \u03a9- to the Penning-mode are found to be induced by changing the N_2 admixture concentration and the driving voltage amplitude. Our numerical simulations reveal details of this mode transition and provide novel insights into the operation details of the Penning-mode. The characteristic excitation\/emission maximum at the time of maximum sheath voltage at each electrode is found to be based on two mechanisms: (i) a direct channel, i.e. excitation\/emission caused by electrons generated by Penning ionization inside the sheaths and (ii) an indirect channel, i.e. secondary electrons emitted from the electrode due to the impact of positive ions generated by Penning ionization at the electrodes.\u003C\/p\u003E\n","url":"https:\/\/rdpcidat.rub.de\/dataset\/experimental-and-computational-investigations-electron-dynamics-micro-atmospheric-pressure","state":"Active","log_message":"Update to resource Figure 7","private":true,"revision_timestamp":"Sun, 03\/21\/2021 - 19:09","metadata_created":"Wed, 09\/30\/2020 - 09:53","metadata_modified":"Sun, 03\/21\/2021 - 19:09","creator_user_id":"79009e3e-aee0-421f-9d06-2cafa8868bbd","type":"Dataset","resources":[{"id":"befd7e78-d7ab-4c2e-841c-9c7135a0fdf7","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%202.zip","description":"\u003Cp\u003ENormalized (to the maximum value of each data set) spatio-temporal emission plots obtained from wavelength integrated and wavelength selective PROES (columns) at various N_2 gas \ufb02ows (rows). The powered electrode is located at x = 0, while the grounded electrode is located at x = 1 mm. The driving frequency, voltage amplitude, and the He \ufb02ow are f = 13.56 MHz, \u03c6 = 315 V, and 1 slm, respectively.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nSimulation data are marked as sim\u003Cbr \/\u003E\nx [t\/TRf] , y[mm]\u003Cbr \/\u003E\n(Figure2a, 2e, 2i): exp Exc rate [a. u.] Wavelength integrated for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure2b, 2f, 2j): exp Exc. Rate [a. u.] Filter 390nm for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure2c, 2g, 2k): exp Exc. Rate [a. u.] Filter 650nm for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure2d, 2h, 2l): exp Exc. Rate [a. u.] Filter 700nm for 0.5sccm, 2.5sccm and 5sccm respectively\u003C\/p\u003E\n","format":"zip","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:57","name":"Figure 2","mimetype":"application\/zip","size":"1.28 MB","created":"Wed, 09\/30\/2020 - 09:56","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:57"},{"id":"f701a839-1574-485f-b568-55abb0edf31d","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%204_0.zip","description":"\u003Cp\u003ESpatio-temporal plots for di\ufb00erent N2 admixtures of the measured and individually normalized emission at 391 nm [(a) - (c)], of the time modulated component of the data shown in the \ufb01rst row [(d) - (f)], of simulation results of the total electron impact excitation rate into the N+ 2 (B)-state [pathways (I) + (II), (g) (I)], the electron impact excitation rate from the molecular ground state [pathway (I), (j) - (l)] and the ionic ground state [pathway (II), (m) - (o)] of N2 into the N+ 2 (B)-state. Plots (p) - (r) show the spatial pro\ufb01les of the normalized time averaged excitation rate of the N+ 2 (B)-state via Penning ionization obtained from the simulation (red lines) and of the temporally constant component of the total emission obtained from the experiment (blue lines). Data are shown for \u03c6 = 315 V.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nSimulation data are marked as sim\u003Cbr \/\u003E\nx [t\/TRf], y[mm]\u003Cbr \/\u003E\n(Figure4a-4c): exp Exc. Rate [a. u.] for 391nm emission line for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure4d-4f): exp Exc. Rate [a. u.] without Penning for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure4g-4i): sim Exc. Rate [a. u.] of total excitation for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure4j-4l): sim Exc. Rate [a. u.] of electron excitation from N2 for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure4m-4o): sim Exc. Rate [a. u.] of electron excitation from N2*(X) for 0.5sccm, 2.5sccm and 5sccm respectively\u003C\/p\u003E\n\u003Cp\u003Ex [a.u.], y[mm].\u003Cbr \/\u003E\n(Figure4p_red-4r_red): exp Exc. Rate [a. u.] of N2+(B)-state ) for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure4p_blue-4r_blue): sim Exc. Rate [a. u.] of N2+(B)-state ) for 0.5sccm, 2.5sccm and 5sccm respectively\u003C\/p\u003E\n","format":"zip","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 14:57","name":"Figure 4","mimetype":"application\/zip","size":"1.15 MB","created":"Wed, 09\/30\/2020 - 09:59","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 14:57"},{"id":"1f705070-dec0-4c0d-95c8-18e897088d5b","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%205_1.zip","description":"\u003Cp\u003EMeasured normalized spatio-temporal plots of the emission of the 706.5 nm He I line (top row) and of the computed electron-impact excitation rate from the He I ground state into the He I (3s)3S1-state (bottom row). Results are shown for di\ufb00erent driving voltage amplitudes (columns). The powered electrode is situated at x = 0, while the grounded electrode is located at x = 1 mm. Discharge conditions: 13.56 MHz, 1 slm He-\ufb02ow, 2.5 sccm N2-\ufb02ow. In the simulation the ion induced SEEC is set to 0.1, 0.3, and 0.2 for N+ 2 , He+, and He+ 2 ions, respectively, and the electron re\ufb02ection probability at the electrodes is 50 %.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nSimulation data are marked as sim\u003Cbr \/\u003E\nx [t\/TRf] , y[mm]\u003Cbr \/\u003E\n(Figure5a-5c): exp Exc rate [a. u.] emission of 706.5nm line for 270V, 315V and 355V respectively\u003Cbr \/\u003E\n(Figure5d-5f): sim Exc. Rate [a. u.] electron-impact excitation rate from the He I ground state into the He I (3s)3 S1-state for 270V, 315V and 355V respectively\u003C\/p\u003E\n","format":"zip","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 19:08","name":"Figure 5","mimetype":"application\/zip","size":"371.68 KB","created":"Wed, 09\/30\/2020 - 10:02","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 19:08"},{"id":"a65eed56-5a06-4c83-a7a5-c59dc56a73bb","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/figure6.docx","description":"\u003Cp\u003EMeasured normalized spatio-temporal plots of the emission of the 706.5 nm He I line (top row) and spatio-temporal plots of the electron-impact excitation rate from the He I ground state into the He I (3s)3S1-state obtained from the simulations (bottom row). Results are shown for di\ufb00erent \ufb02ows of N2 at a constant He \ufb02ow of 1 slm (columns). The powered electrode is situated at x = 0, while the grounded electrode is located at x = 1 mm. Discharge conditions: 13.56 MHz, 315 V. In the simulation the ion induced SEEC is set to 0.1, 0.3, and 0.2 for N+ 2 , He+, and He+ 2 ions, respectively, and the electron re\ufb02ection probability at the electrodes is 50%.Experimental data are marked as exp\u003Cbr \/\u003E\nSimulation data are marked as sim\u003Cbr \/\u003E\nx [t\/TRf] , y[mm]\u003Cbr \/\u003E\n(Figure6a-6c): exp Exc rate [a. u.] emission of 706.5nm line for 0.5sccm, 2.5sccm and 5sccm respectively\u003Cbr \/\u003E\n(Figure6d-6f): sim Exc. Rate [a. u.] electron-impact excitation rate from the He I ground state into the He I (3s)3 S1-state for 270V, 315V and 355V respectively\u003C\/p\u003E\n","format":"zip","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 19:09","name":"Figure 6","mimetype":"application\/vnd.openxmlformats-officedocument.wordprocessingml.document","size":"12.37 KB","created":"Wed, 09\/30\/2020 - 10:07","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 19:09"},{"id":"1e26bcec-0372-4522-b08e-94871fbf5e71","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure%207_1.zip","description":"\u003Cp\u003ENormalized spatio-temporal plots of the measured emission of the 706.5 nm He I line (a) and normalized (to the maximum value of (b)) spatio-temporal plots of the electron-impact excitation rate obtained from the simulations for di\ufb00erent choices of the surfaces coe\ufb03cients listed in table 2. Discharge conditions: 355 V driving voltage amplitude, 1 slm He \ufb02ow, 0.5 sccm N2 \ufb02ow. The powered electrode is situated at x = 0, while the grounded electrode is located at x = 1 mm. The sheath edge position (white dashed lines) is calculated using the Brinkmann criterion [82] and is shown as white dashed line in the simulation plots.\u003Cbr \/\u003E\nExperimental data are marked as exp\u003Cbr \/\u003E\nSimulation data are marked as sim\u003Cbr \/\u003E\nx [t\/TRf] , y[mm]\u003Cbr \/\u003E\n(Figure7a): exp Exc rate [a. u.] emission of 706.5nm line for 270V, 315V and 355V respectively\u003Cbr \/\u003E\n(Figure7b-7e): sim Exc. Rate [a. u.] normalized to the maximum value of (b) electron-impact excitation rate from the He I ground state into the He I (3s)3 S1-state for SEE ON \u03b1 = 0.5, SEE OFF \u03b1 = 0, SEE ON \u03b1 = 0 and SEE OFF \u03b1 = 0.5 respectively\u003C\/p\u003E\n","format":"zip","state":"Active","revision_timestamp":"Sun, 03\/21\/2021 - 19:09","name":"Figure 7","mimetype":"application\/zip","size":"251.91 KB","created":"Wed, 09\/30\/2020 - 10:13","resource_group_id":"60dfa3fb-4113-4271-8531-8587fa07dcbe","last_modified":"Date changed  Sun, 03\/21\/2021 - 19:09"}],"tags":[{"id":"e0c9dfd4-e37c-4d6e-a0a3-b1348dfdc3a8","vocabulary_id":"2","name":"electron dynamics"},{"id":"f3500f57-1df9-4bad-80a2-e070aa43ea75","vocabulary_id":"2","name":"micro atmospheric pressure radio-frequency plasma jet"}],"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"}]}]}