{"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":"1188f8c5-8da3-4d93-801b-37b9e7d40778","name":"nanosecond-resolved-ro-vibrational-co2-excitation-measurement","title":"Nanosecond resolved ro-vibrational CO2 excitation measurement","author":"Yanjun Du","author_email":"duyanjun13@gmail.com","maintainer":"Research Data Repository","maintainer_email":"achim.vonkeudell@rub.de","license_title":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","notes":"\u003Cp\u003EWe report first ns-resolved absorption measurements of the ro-vibrational excitation of CO2. The high temporal resolution of 8 ns is made possible by a fast detector (rise-time 5 ns), sensitive in the mid-infrared region. The resolution is achieved by a slow temperature scan of a quantum cascade laser and a segmented data capturing scheme. A repetitively pulsed ns discharge in 10% CO2 + 90% He at 150 mbar and a repetition rate of 2 kHz is investigated. The evolution of the population densities of the different vibration modes as well as the associated vibrational and rotational temperatures within the discharge pulse of only 150 ns length are simultaneously determined and provide valuable insight into the CO2 excitation dynamics. A preferential excitation in the asymmetric vibrational mode is observed in the discharge phase shortly after the breakdown.\u003C\/p\u003E\n","url":"https:\/\/rdpcidat.rub.de\/dataset\/nanosecond-resolved-ro-vibrational-co2-excitation-measurement","state":"Active","log_message":"Edited by kd.","private":true,"revision_timestamp":"Tue, 06\/28\/2022 - 21:19","metadata_created":"Mon, 02\/14\/2022 - 13:58","metadata_modified":"Tue, 06\/28\/2022 - 21:19","creator_user_id":"f48c8e27-0db3-4168-8d16-19918577f661","type":"Dataset","resources":[{"id":"b5d4f369-edc5-41bc-8a7a-38c2beaeb7c9","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Fig%203a_0.txt","description":"\u003Cp\u003EMeasured signal intensities for a discharge voltage of 2.25 kV and a pulse length of 150 ns. The light intensity signal without a discharge I0 is shifted\u003Cbr \/\u003E\nvertically by +0.5 V. The different segments are provided as separate columns sequentially. The laser wavenumber tuning starts from 2288.34 cm-1 with a scanning rate of around 0.027 cm^-1\/s. The resolution was set to 16 ns in order to allow faster measurement times over a wider spectral range.\u003C\/p\u003E\n","format":"txt","state":"Active","revision_timestamp":"Thu, 02\/24\/2022 - 14:00","name":"Fig 3 (a\uff09","mimetype":"text\/plain","size":"302.99 MB","created":"Sat, 08\/07\/2021 - 13:02","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Thu, 02\/24\/2022 - 14:00"},{"id":"c18cce3e-cafe-4e56-93b0-7721c9653f82","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Fig%203b_3.txt","description":"\u003Cp\u003EDeduced absorbance for a discharge voltage of 2.25 kV and a pulse length of 150 ns. The resolution was set to 16 ns in order to allow faster measurement times over a wider spectral range.\u003C\/p\u003E\n","format":"txt","state":"Active","revision_timestamp":"Thu, 02\/24\/2022 - 14:00","name":"Fig 3 (b)","mimetype":"text\/plain","size":"338.66 KB","created":"Mon, 08\/09\/2021 - 10:43","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Thu, 02\/24\/2022 - 14:00"},{"id":"e054cbbf-61c1-4347-bd76-518d2fd7c8fb","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Fig%204_0.txt","description":"\u003Cp\u003EVoltage and current waveforms in the discharge with 10% CO2 + 90% He at 150 mbar, pulse length of 150 ns, repetition rate of 2 kHz and applied voltage of 2.25 kV.\u003C\/p\u003E\n","format":"txt","state":"Active","revision_timestamp":"Thu, 02\/24\/2022 - 14:00","name":"Fig 4","mimetype":"text\/plain","size":"580.77 KB","created":"Mon, 08\/09\/2021 - 11:42","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Thu, 02\/24\/2022 - 14:00"},{"id":"7650902a-9d8a-4106-a157-40e0f5614db2","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Fig%205_1.txt","description":"\u003Cp\u003ETemporal evolution of the best-fit gas temperatures and vibrational temperatures within the discharge phase deduced from the measured absorbance in figure 3.\u003C\/p\u003E\n","format":"txt","state":"Active","revision_timestamp":"Thu, 02\/24\/2022 - 14:00","name":"Fig 5","mimetype":"text\/plain","size":"226.91 KB","created":"Mon, 08\/09\/2021 - 11:42","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Thu, 02\/24\/2022 - 14:00"},{"id":"cf2be329-7c8d-4775-9c79-2a67d0e37e22","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Fig%206_1.txt","description":"\u003Cp\u003ETime-resolved populations of the different vibrational states deduced from the scanned spectral range. The conditions are the same as in figure 4. The states are labeled by their vibrational quantum numbers in the form of v1v2v3. The densities are given as fraction of the total CO2 molecules.\u003C\/p\u003E\n","format":"txt","state":"Active","revision_timestamp":"Thu, 02\/24\/2022 - 14:00","name":"Fig 6","mimetype":"text\/plain","size":"7.58 MB","created":"Mon, 08\/09\/2021 - 14:50","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Thu, 02\/24\/2022 - 14:00"},{"id":"7b8cec17-3a61-452b-a6f0-86917038d06b","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Fig%207_0.txt","description":"\u003Cp\u003EDensities of the first vibrational state of the asymmetric mode of CO2 001 (a) for varying pulse length and (b) for different discharge voltages. The experimental values are in the columns marked DensityExp. The columns designated DensityModel are the fits of a simple model (see J. Phys. D: Appl. Phys. 54 (2021) 34LT02) with parameter values \u03b1=(1.98 \u00b1 0.11) \u00d7 10^\u22122 and \u03b2=(1.98 \u00b1 0.11) \u00d7 10^\u22122 C^-1. The conditions are provided in the column labels.\u003C\/p\u003E\n","format":"txt","state":"Active","revision_timestamp":"Thu, 02\/24\/2022 - 14:00","name":"Fig 7","mimetype":"text\/plain","size":"8.66 MB","created":"Mon, 08\/09\/2021 - 15:34","resource_group_id":"295bcc10-edab-46be-bd9b-6d94d38e8298","last_modified":"Date changed  Thu, 02\/24\/2022 - 14:00"}],"tags":[{"id":"6ea8c330-1e20-4585-a5f7-05aa778976c0","vocabulary_id":"2","name":"APPJ"},{"id":"dfe54e34-43c1-4e83-9afc-ab8c23388efc","vocabulary_id":"2","name":"carbon dioxide"},{"id":"91596d33-0a2b-4d56-a3e9-18172c43e2de","vocabulary_id":"2","name":"absorption spectroscopy"},{"id":"a9fac56b-cb04-4ab5-b46b-ee2ace4221b6","vocabulary_id":"2","name":"nanosecond discharge"},{"id":"35dfc4ec-e7cc-4998-b5d4-d246c890e416","vocabulary_id":"2","name":"vibrational temperatures"}],"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"}]}]}