{"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":"8246146e-9880-4951-8c7b-4f12e8c3a675","name":"mode-transition-helium-barrier-discharge-oxygen-admixtures-insights-micro-cavity-plasma","title":"Mode transition in a helium barrier discharge with oxygen admixtures: Insights into a micro cavity plasma array reactor","author_email":"david.steuer@rub.de","maintainer":"Research Data Repository","maintainer_email":"achim.vonkeudell@rub.de","license_title":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","notes":"\u003Cp\u003EDielectric barrier discharges (DBDs) offer great potential for applications such as volatile organic compounds (VOCs) conversion or plasma catalysis. For many of these applications, an admixture of molecular oxygen is important, for example, to oxidize the gases to be treated. However, oxygen addition can lead to a drastic change in discharge dynamics, which may affect conversion efficiency. The discharge may transition to a filamentary mode, which could influence plasma chemical processes or in extreme cases potentially damage the reactor. This study investigates the discharge mode of a micro cavity plasma array operated at atmospheric pressure with a helium flow (1-2slm) containing small oxygen admixtures (0-5%). A multitude of parameters as voltage, current, power, and emission are investigated for characterization. Additionally, the electric field, mean electron energy and atomic oxygen density are examined depending on the oxygen admixture. With pure helium, a homogeneous atmospheric pressure glow discharge (APGD) is observed, appearing as a quasi-continuous glow discharge. With small oxygen admixtures (0.1-1%), individual discharge pulses become visible, though they remain separated (pseudo glow discharge). At higher oxygen admixtures (\u0026gt;1%), a mode transition to a filamentary discharge is observed. The measurements indicate that the discharge mode, especially the individual discharge pulses, has a significant impact on conversion efficiency. This knowledge can help in the future to fine-tune the discharge mode using external parameters such as voltage waveform or frequency to optimize conversion efficiency.\u003C\/p\u003E\n","url":"https:\/\/rdpcidat.rub.de\/dataset\/mode-transition-helium-barrier-discharge-oxygen-admixtures-insights-micro-cavity-plasma","state":"Active","log_message":"Update to resource Figure10","private":true,"revision_timestamp":"Wed, 12\/18\/2024 - 06:35","metadata_created":"Thu, 11\/28\/2024 - 11:20","metadata_modified":"Wed, 12\/18\/2024 - 06:35","creator_user_id":"91284078-6b39-44ab-8d2e-b3961249cf70","type":"Dataset","resources":[{"id":"8a0c1211-e5df-4c32-8bc4-4e22c534ee22","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure2_0.csv","description":"\u003Cp\u003EVoltage, current and emission characteristics for ramp excitation under pure helium atmosphere. Conditions: V = 880 V peak-to-peak voltage, f = 15kHz frequency, d = 200\u00b5m cavity diameter.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:31","name":"Figure2","mimetype":"text\/csv","size":"1.1 MB","created":"Thu, 11\/28\/2024 - 11:22","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:31"},{"id":"9059fae3-27ad-4a16-b39b-cff673a5b254","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure4_0.csv","description":"\u003Cp\u003EMean cavity filling depending on the oxygen admixture. Conditions: V = 1200V, f = 15kHz, d = 200\u00b5m, gate time = 200ns, exposure time = 25ms.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:32","name":"Figure4","mimetype":"text\/csv","size":"224 bytes","created":"Thu, 11\/28\/2024 - 11:23","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:32"},{"id":"bb77aa09-e2fb-4128-920e-06fb4ce253e6","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure5.csv","description":"\u003Cp\u003EIntegrated emission of a single cavity depending on the oxygen admixture. Conditions: V = 1200V peak-to-peak voltage, f = 15kHz frequency, d = 200\u00b5m cavity diameter, gate time = 200ns, exposure time = 25ms.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:34","name":"Figure5","mimetype":"text\/csv","size":"35.87 KB","created":"Thu, 11\/28\/2024 - 11:25","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:34"},{"id":"945e743e-8978-4917-a672-46aa55e6c701","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure6.csv","description":"\u003Cp\u003ENumber of peaks (a), the intensity ratio of maximum to mean value (b) and discharge length (c) depending on the oxygen admixture. The results of 1156 cavities were averaged. The error bars indicate the standard deviation. Conditions: V = 1200V peak-to-peak voltage, f = 15kHz frequency, d = 200\u00b5m cavity diameter, gate time = 200ns, exposure time = 25ms.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:34","name":"Figure6","mimetype":"text\/csv","size":"1.08 KB","created":"Thu, 11\/28\/2024 - 11:26","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:34"},{"id":"6f0ad917-4e36-476f-bd2c-883b97b353c5","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure7_a.csv","description":"\u003Cp\u003EPower depending on the applied voltage for different oxygen admixtures (a) and power slope, ignition voltage U and zeta (b) depending on the oxygen admixture. Conditions: V = 1200V peak-to-peak voltage, f = 15kHz frequency, d = 200\u00b5m cavity diameter.}\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:34","name":"Figure7_a","mimetype":"text\/csv","size":"6.22 KB","created":"Thu, 11\/28\/2024 - 15:04","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:34"},{"id":"02074d6c-4865-43b6-accb-b68229271863","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure7_b.csv","description":"\u003Cp\u003EPower depending on the applied voltage for different oxygen admixtures (a) and power slope, ignition voltage U and zeta (b) depending on the oxygen admixture. Conditions: V = 1200V peak-to-peak voltage, f = 15kHz frequency, d = 200\u00b5m cavity diameter.}\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:34","name":"Figure7_b","mimetype":"text\/csv","size":"432 bytes","created":"Thu, 11\/28\/2024 - 15:05","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:34"},{"id":"39f9f546-88aa-4b52-9b08-3e071d1b7457","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure8_a.csv","description":"\u003Cp\u003EFit of the 492nm helium line pair within the DPP to determine the electric field for 0.25% (a) and 2.00% (b) oxygen admixture. Conditions: V = 1200V peak-to-peak voltage, f = 15kHz frequency, d = 150\u00b5m cavity diameter, gate time = 26\u00b5s, exposure time = 400s.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:35","name":"Figure8_a","mimetype":"text\/csv","size":"31.48 KB","created":"Thu, 11\/28\/2024 - 15:06","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:35"},{"id":"1b8d2fb3-10f8-4fe0-ac8c-e0792e085be3","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure8_b.csv","description":"\u003Cp\u003EFit of the 492nm helium line pair within the DPP to determine the electric field for 0.25% (a) and 2.00% (b) oxygen admixture. Conditions: V= 1200V peak-to-peak voltage, f = 15kHz frequency, d = 150\u00b5m cavity diameter, gate time = 26\u00b5s, exposure time = 400s.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:35","name":"Figure8_b","mimetype":"text\/csv","size":"33.52 KB","created":"Thu, 11\/28\/2024 - 15:07","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:35"},{"id":"680d5528-6519-4eed-a98d-04054aa1a10b","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure9.csv","description":"\u003Cp\u003EElectric field and fraction of the field-free line depending on the oxygen admixture. Conditions: V = 1200V peak-to-peak voltage, f = 15kHz frequency, d = 150\u00b5m cavity diameter, gate time = 26\u00b5s, exposure time = 400s.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:35","name":"Figure9","mimetype":"text\/csv","size":"541 bytes","created":"Thu, 11\/28\/2024 - 15:08","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:35"},{"id":"fbfc16ac-c01c-48bb-afdc-ce6a6e42ce8f","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure10_0.csv","description":"\u003Cp\u003EAtomic oxygen density and mean electron energy as a function of O2-admixture. Conditions: 0.05% Ar admixture as actinometer gas, V = 1400V peak-to-peak voltage, f = 15kHz frequency, d = 200\u00b5m cavity diameter, exposure time = 5s.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:35","name":"Figure10","mimetype":"text\/csv","size":"856 bytes","created":"Thu, 11\/28\/2024 - 15:09","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:35"},{"id":"e909c512-0bfd-47ea-b2cd-1ead644a6f4e","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure11.csv","description":"\u003Cp\u003EAtomic oxygen density for a single cavity as a function of time. Conditions: 0.1% O2 admixture, 0.05% Ar admixture as actinometer gas, V = 1400\\,V peak-to-peak voltage, f = 15kHz frequency, d = 200\u00b5m cavity diameter, gate time = 1\u00b5s, exposure time = 10s.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 12\/18\/2024 - 06:36","name":"Figure11","mimetype":"text\/csv","size":"662 bytes","created":"Thu, 11\/28\/2024 - 15:10","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Wed, 12\/18\/2024 - 06:36"}],"tags":[{"id":"23fee867-bed4-469b-ba12-766621690038","vocabulary_id":"2","name":"A6"},{"id":"0aad9071-ba5c-43f2-b2df-cc066152c5f8","vocabulary_id":"2","name":"dielectric barrier discharge"},{"id":"d44bdd04-45e4-4f86-b721-740db562822b","vocabulary_id":"2","name":"micro cavity plasma array"}],"groups":[{"description":"\u003Cp\u003EThe research will focus on the fundamentals of non-equilibrium plasmas and their interaction with the surrounding media such as solids or liquids using spectroscopic techniques.\u003C\/p\u003E\n","id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","image_display_url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/logorub_weiss_0.gif","title":"PIP","name":"group\/pip"}]}]}