Nuclear Resonances in X-ray Waveguides

Lohse, Leon Merten

dc.contributor.advisor	Salditt, Tim Prof. Dr.
dc.contributor.author	Lohse, Leon Merten
dc.date.accessioned	2025-06-12T11:35:12Z
dc.date.available	2025-06-19T00:50:09Z
dc.date.issued	2025-06-12
dc.identifier.uri	http://resolver.sub.uni-goettingen.de/purl?ediss-11858/16045
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-11324
dc.format.extent	192	de
dc.language.iso	eng	de
dc.subject.ddc	530	de
dc.title	Nuclear Resonances in X-ray Waveguides	de
dc.type	doctoralThesis	de
dc.contributor.referee	Salditt, Tim Prof. Dr.
dc.date.examination	2024-06-14	de
dc.subject.gok	Physik (PPN621336750)	de
dc.description.abstractger	Hard X-rays generally only interact very weakly with matter, so that tissue, for example, is quite transparent to them. However, this makes the controlled manipulation of X-ray light particularly challenging. While many functionalities for visible and infrared light can nowadays be accommodated in integrated optical components on a microscopic scale on semiconductor substrates, macroscopic crystal optics are usually still required for X-ray light, despite the substantially smaller wavelength. Yet, similar to fiber optics for visible light, X-ray waveguides can guide X-ray light, whereby it is confined in one or two dimensions to a length scale of just a few 10 nm. This dissertation deals fundamentally with X-ray waveguides and the interaction of X-ray light with resonant quantum emitters within them. In particular, Mössbauer isotopes such as iron-57 are considered, whose atomic nuclei have very long-lived metastable states that can be excited with X-rays. On the one hand, a comprehensive theory of the nano-optics of X-ray waveguides is developed. On the other hand, first experiments are presented in which Mössbauer isotopes were embedded within X-ray waveguides and excited with focused synchrotron radiation. Finally, a Young's double-slit experiment on the nanometer scale is shown (after Thomas Young, who received his doctorate in Göttingen in 1796), with which the resonant phase shift of atomic nuclei can be precisely measured. These represent important steps towards the manipulation of x-ray light on the nanometer scale.	de
dc.description.abstracteng	Hard X-rays generally only interact very weakly with matter, so that tissue, for example, is quite transparent to them. However, this makes the controlled manipulation of X-ray light particularly challenging. While many functionalities for visible and infrared light can nowadays be accommodated in integrated optical components on a microscopic scale on semiconductor substrates, macroscopic crystal optics are usually still required for X-ray light, despite the substantially smaller wavelength. Yet, similar to fiber optics for visible light, X-ray waveguides can guide X-ray light, whereby it is confined in one or two dimensions to a length scale of just a few 10 nm. This dissertation deals fundamentally with X-ray waveguides and the interaction of X-ray light with resonant quantum emitters within them. In particular, Mössbauer isotopes such as iron-57 are considered, whose atomic nuclei have very long-lived metastable states that can be excited with X-rays. On the one hand, a comprehensive theory of the nano-optics of X-ray waveguides is developed. On the other hand, first experiments are presented in which Mössbauer isotopes were embedded within X-ray waveguides and excited with focused synchrotron radiation. Finally, a Young's double-slit experiment on the nanometer scale is shown (after Thomas Young, who received his doctorate in Göttingen in 1796), with which the resonant phase shift of atomic nuclei can be precisely measured. These represent important steps towards the manipulation of x-ray light on the nanometer scale.	de
dc.contributor.coReferee	Röhlsberger, Ralf Prof. Dr.
dc.subject.eng	x-ray optics	de
dc.subject.eng	waveguides	de
dc.subject.eng	Mössbauer effect	de
dc.subject.eng	synchrotron radiation	de
dc.subject.eng	waveguide quantum electrodynamics	de
dc.subject.eng	nuclear resonant scattering	de
dc.subject.eng	resonant pulse propagation	de
dc.identifier.urn	urn:nbn:de:gbv:7-ediss-16045-7
dc.affiliation.institute	Fakultät für Physik	de
dc.description.embargoed	2025-06-19	de
dc.identifier.ppn	1928230067
dc.notes.confirmationsent	Confirmation sent 2025-06-12T11:45:01	de

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