{"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":"15ea62ed-8abe-4307-8d43-058049bd4e36","name":"vibrational-cars-measurements-near-atmospheric-pressure-plasma-jet-nitrogen-i-measurement","title":"Vibrational CARS measurements in a near-atmospheric pressure plasma jet in nitrogen: I. Measurement procedure and results","author_email":"jan.kuhfeld@rub.de","maintainer":"Research Data Repository","maintainer_email":"achim.vonkeudell@rub.de","license_title":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","notes":"\u003Cp\u003EThe non-equilibrium ro-vibrational distribution functions of molecules in a plasma can heavily influence the discharge operation and the plasma-chemistry. A convenient method for measuring the distribution function is coherent anti-Stokes Raman scattering (CARS). CARS spectra are measured in a ns-pulsed plasma between two parallel, 1 mm spaced molybdenum electrodes in nitrogen at 200 mbar with pulse durations of 200 ns\/250 ns and a repetition rate of 1 kHz. The CARS spectra are analyzed by a fitting routine to extract information about the vibrational excitation of the nitrogen molecules in the plasma. It is found that during the discharge the vibrational distribution for $v \\lesssim 7$ can be described by a vibrational two-temperature distribution function. Additionally, the electric field is measured by the electric field induced second harmonic generation method during the discharge pulse. It is found to be constant in time after the initial ionization wave with values close to 81 Td for the investigated conditions. During the afterglow between two discharge pulses a more general fitting approach is used to obtain the population differences of two neighboring vibrational states. This allows to capture the more complex vibrational dynamics in that time period. The measurement results are discussed in more detail and compared to simple plasma models in a companion paper \u003Cem\u003EKuhfeld et al (2021 J. Phys. D: Appl. Phys. 54 305205).\u003C\/em\u003E\u003C\/p\u003E\n","url":"https:\/\/rdpcidat.rub.de\/dataset\/vibrational-cars-measurements-near-atmospheric-pressure-plasma-jet-nitrogen-i-measurement","state":"Active","log_message":"Edited by kd.","private":true,"revision_timestamp":"Sat, 09\/25\/2021 - 12:10","metadata_created":"Tue, 05\/04\/2021 - 14:21","metadata_modified":"Sat, 09\/25\/2021 - 12:10","creator_user_id":"c0b288dd-c16c-4c4d-9f38-45d4f5f45229","type":"Dataset","resources":[{"id":"13072248-a666-4d1e-8066-a614c934c00f","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/VI.csv","description":"\u003Cp\u003ECurrent and voltage waveforms of the discharge.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 09\/08\/2021 - 18:09","name":"Fig. 12, current and voltage","mimetype":"text\/csv","size":"929.98 KB","created":"Wed, 09\/08\/2021 - 08:51","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Wed, 09\/08\/2021 - 18:09"},{"id":"91fbfcf3-9d94-4ced-9a17-a2192f2f7573","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/electric_field.csv","description":"\u003Cp\u003EElectric field data points shown in figure 13.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 09\/08\/2021 - 18:21","name":"Fig. 13, electric field","mimetype":"text\/csv","size":"656 bytes","created":"Wed, 09\/08\/2021 - 08:53","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Wed, 09\/08\/2021 - 18:21"},{"id":"7e8080e0-9def-486c-9130-30a32087ad8f","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/two_temp_comparison.csv","description":"\u003Cp\u003ECARS spectra shown in figure 14. Raman shift given in wavenumbers, spectrum and fits are the sqrt of the intensity in a.u..\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 09\/08\/2021 - 18:21","name":"Fig. 14, CARS spectra, comparison between one temp. and two temp. distributions","mimetype":"text\/csv","size":"46.11 KB","created":"Wed, 09\/08\/2021 - 08:56","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Wed, 09\/08\/2021 - 18:21"},{"id":"e365d79e-71a4-44aa-b700-16abb5d97859","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Rh.csv","description":"\u003Cp\u003ERh as defined in the paper.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 09\/08\/2021 - 18:21","name":"Fig. 15, Rh","mimetype":"text\/csv","size":"1.47 KB","created":"Wed, 09\/08\/2021 - 08:57","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Wed, 09\/08\/2021 - 18:21"},{"id":"87d08859-477d-4223-aaa6-0e2f94bf1b2e","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Tvh.csv","description":"\u003Cp\u003EHot vibrational temperature as shown in figure 16.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 09\/08\/2021 - 18:21","name":"Fig. 16, hot vib. temperature","mimetype":"text\/csv","size":"1.46 KB","created":"Wed, 09\/08\/2021 - 08:58","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Wed, 09\/08\/2021 - 18:21"},{"id":"47ac1c1f-d6a5-45d5-a6e2-9011626edde1","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/vibE.csv","description":"\u003Cp\u003EVibrational energy gain during the discharge pulse.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 09\/08\/2021 - 18:21","name":"Fig. 17, vib. energy gain","mimetype":"text\/csv","size":"2.23 KB","created":"Wed, 09\/08\/2021 - 09:02","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Wed, 09\/08\/2021 - 18:21"},{"id":"dea2efd0-be27-48e3-a7c1-68f237f5638d","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Nv.csv","description":"\u003Cp\u003EDensities of vib. excited states (divided by the total gas density) used to create figure 19 and 20.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Wed, 09\/08\/2021 - 18:21","name":"Fig. 19\/20, densities of excited states","mimetype":"text\/csv","size":"17.75 KB","created":"Wed, 09\/08\/2021 - 09:15","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Wed, 09\/08\/2021 - 18:21"}],"tags":[{"id":"6ea8c330-1e20-4585-a5f7-05aa778976c0","vocabulary_id":"2","name":"APPJ"},{"id":"59d8c583-6d2d-42dc-b932-b1ba2368e916","vocabulary_id":"2","name":"atmospheric pressure"},{"id":"c8a9530d-e291-4b30-859f-93dfdccf8747","vocabulary_id":"2","name":"atmospheric pressure plasmas"},{"id":"212f1711-b53d-4261-869d-8aab2f564cd7","vocabulary_id":"2","name":"ns voltage pulse"}],"groups":[{"description":"\u003Cp\u003EChair experimental physics V \u0022atom and laser physics\u0022 at the faculty of physics and astronomy at Ruhr University Bochum\u003C\/p\u003E\n","id":"295bcc10-edab-46be-bd9b-6d94d38e8298","image_display_url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/rublogoweiss_1.png","title":"EP5","name":"group\/ep5"}]}]}