IR-anregungsmodulierte Photoionisationsspektroskopie an natriumdotierten Wasserclustern

Zurheide, Florian

dc.contributor.advisor	Zeuch, Thomas Prof. Dr.
dc.contributor.author	Zurheide, Florian
dc.date.accessioned	2021-10-19T11:04:36Z
dc.date.available	2021-10-25T00:50:07Z
dc.date.issued	2021-10-19
dc.identifier.uri	http://hdl.handle.net/21.11130/00-1735-0000-0008-5947-5
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-8890
dc.language.iso	deu	de
dc.publisher	Niedersächsische Staats- und Universitätsbibliothek Göttingen	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc	540	de
dc.title	IR-anregungsmodulierte Photoionisationsspektroskopie an natriumdotierten Wasserclustern	de
dc.type	doctoralThesis	de
dc.title.translated	IR Excitation-modulated Photoionization Spectroscopy on Sodium-doped Water Clusters	de
dc.contributor.referee	Zeuch, Thomas Prof. Dr.
dc.date.examination	2021-03-25
dc.description.abstracteng	The compound water exhibits a variety of unique properties which are indispensable for many processes in animate and inanimate nature. These properties do not arise from a single water molecules but from the strong anisotropic interactions present between numerous water molecules, namely hydrogen bonds. In this work, infrared spectra of water clusters generated in adiabatic supersonic expansions are obtained in a precisely size selective manner to provide an experimental access to these intermolecular interactions and to serve as a bench mark for computational studies that are aimed to model water properties and microphysical processes occurring e.g. in the course of phase transitions and more specifically condensation processes. In collaboration with theoretical research groups the number of water molecules necessary for a structural change from amorphous to crystal-like cluster structures could be assigned to approximately 90 molecules. At the same time a subtle micro effect arising from the energetic balance between molecules located on the cluster surface and those constituting the core could be observed. Structural optimization of the cluster core to form a thermodynamically stable crystal lattice forces surface-near hydrogen bonds to break leading to an enhanced number of free OH oscillators on the surface of crystal-like particles. Moreover, strong evidence was found for the phase transition between liquid water and ice I in small systems to lose its first-order character and to occur through heterophasic oscillations over time within a certain temperature range.	de
dc.contributor.coReferee	Stalke, Dietmar Prof. Dr.
dc.subject.eng	water	de
dc.subject.eng	clusters	de
dc.subject.eng	ice	de
dc.subject.eng	ice crystals	de
dc.subject.eng	phase transitions	de
dc.subject.eng	mass spectrometry	de
dc.subject.eng	infrared spectroscopy	de
dc.subject.eng	supersonic expansions	de
dc.identifier.urn	urn:nbn:de:gbv:7-21.11130/00-1735-0000-0008-5947-5-6
dc.affiliation.institute	Fakultät für Chemie	de
dc.subject.gokfull	Chemie (PPN62138352X)	de
dc.description.embargoed	2021-10-25
dc.identifier.ppn	1774528916

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Fakultät für Chemie (inkl. GAUSS) [701]

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