Thomas J. A. Wolf, Fabian Holzmeier, Isabella Wagner, Nora Berrah, Christoph Bostedt, John Bozek, Philip H. Bucksbaum, Ryan Coffee, James Cryan, Joe Farrell, Raimund Feifel, Todd J. Martinez, Brian McFarland, Melanie Mucke, Saikat Nandi, Francesco Tarantelli, Ingo Fischer, Markus Gühr
- Molecules often fragment after photoionization in the gas phase. Usually, this process can only be investigated spectroscopically as long as there exists electron correlation between the photofragments. Important parameters, like their kinetic energy after separation, cannot be investigated. We are reporting on a femtosecond time-resolved Auger electron spectroscopy study concerning the photofragmentation dynamics of thymine. We observe the appearance of clearly distinguishable signatures from thymine′s neutral photofragment isocyanic acid. Furthermore, we observe a time-dependent shift of its spectrum, which we can attribute to the influence of the charged fragment on the Auger electron. This allows us to map our time-dependent dataset onto the fragmentation coordinate. The time dependence of the shift supports efficient transformation of the excess energy gained from photoionization into kinetic energy of the fragments. Our method is broadly applicable to the investigation of photofragmentation processes.
MetadatenAuthor details: | Thomas J. A. WolfORCiD, Fabian Holzmeier, Isabella WagnerORCiD, Nora Berrah, Christoph Bostedt, John Bozek, Philip H. Bucksbaum, Ryan Coffee, James Cryan, Joe Farrell, Raimund Feifel, Todd J. MartinezORCiD, Brian McFarland, Melanie Mucke, Saikat Nandi, Francesco TarantelliORCiD, Ingo FischerORCiD, Markus GührORCiDGND |
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DOI: | https://doi.org/10.3390/app7070681 |
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ISSN: | 2076-3417 |
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Title of parent work (English): | Applied Sciences |
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Publisher: | MDPI |
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Place of publishing: | Basel |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2017/07/01 |
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Publication year: | 2017 |
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Publishing institution: | Universität Potsdam |
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Release date: | 2017/11/02 |
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Tag: | Auger electron spectroscopy; photochemistry; photofragmentation; ultrafast dynamics |
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Volume: | 7 |
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Issue: | 7 |
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Funding institution: | Universität Potsdam, Publikationsfonds |
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Funding number: | PA 2017_38 |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
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Peer review: | Referiert |
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Grantor: | Publikationsfonds der Universität Potsdam |
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Publishing method: | Open Access |
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License (German): | CC-BY - Namensnennung 4.0 International |
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External remark: | Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 386 |
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