Book/Dissertation / PhD Thesis

PUBDB-2024-07624

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Energy time ptychography for Mössbauer resonances

Negi, A. (Corresponding author)DESY* ; Roehlsberger, R. (Thesis advisor)XFEL.EU*DESY* ; Brandt, C. (Thesis advisor)

2024
Dr. Hut München
ISBN: 978-3-8439-5535-5, 3843955352

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Please use a persistent id in citations: doi:10.3204/PUBDB-2024-07624

Abstract: It is a fundamental problem in photon science that at X-ray energies, the oscillation frequency of the electromagnetic field is so high that a detector cannot measure the phase of an interacting object. This ‘phase problem’ also occurs in measurements of an object’s atomic-level properties using recoilless nuclear resonant scattering (NRS) of pulsed synchrotron radiation, which is based on the Mössbauer effect.In this thesis, we demonstrate how to use a ptychographic scanning technique to perform computational phase retrieval for an object in the energy domain via overlapping NRS measurements in the time domain. The technique enables hyperfine spectroscopy of objects at a synchrotron, without the need for a dedicated synchrotron Mössbauer source.

Note: Bibliography: Seite 219-232; Text Englisch, Zusammenfassung in deutscher und englischer Sprache; Kann online als Open Access veröffentlicht werden. (Ich habe die Rechte vom Verlag)
Note: Dissertation, University of Hamburg, 2024

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Contributing Institute(s):

1. FS-Photon Science (FS-PS)

Research Program(s):

1. 623 - Data Management and Analysis (POF4-623) (POF4-623)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. HIDSS-0002 - DASHH: Data Science in Hamburg - Helmholtz Graduate School for the Structure of Matter (2019_IVF-HIDSS-0002) (2019_IVF-HIDSS-0002)
4. PHGS, VH-GS-500 - PIER Helmholtz Graduate School (2015_IFV-VH-GS-500) (2015_IFV-VH-GS-500)

Experiment(s):

1. PETRA Beamline P01 (PETRA III)

Appears in the scientific report 2024

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Database coverage:

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