Time-Resolved sub-Ångström Metrology by Temporal Phase Interferometry near X-Ray Resonances of Nuclei
| Autor: | Andreas Kaldun, Stephan Goerttler, Thomas Pfeifer, Johann Haber, Cornelius Strohm, Kilian Peter Heeg, Jörg Evers, Rajagopalan Subramanian, Ralf Röhlsberger, Patrick Reiser, Christian D. Ott |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Astrophysics::High Energy Astrophysical Phenomena Phase (waves) General Physics and Astronomy Resonance Lambda Research group J. Evers – Division C. H. Keitel 01 natural sciences Atomic units Wavelength Interferometry Temporal resolution 0103 physical sciences ddc:530 Emission spectrum Atomic physics 010306 general physics |
| Zdroj: | Physical Review Letters Physical review letters 123(15), 153902 (2019). doi:10.1103/PhysRevLett.123.153902 |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | Physical review letters 123(15), 153902 (2019). doi:10.1103/PhysRevLett.123.153902 We introduce an analytical phase-reconstruction principle that retrieves atomic scale motion via timedomaininterferometry. The approach is based on a resonant interaction with high-frequency light and doesnot require temporal resolution on the time scale of the resonance period. It is thus applicable to hard x raysand γ rays for measurements of extremely small spatial displacements or relative-frequency changes. Here,it is applied to retrieve the temporal phase of a 14.4 keVemission line of an 57Fe sample, which correspondsto a spatial translation of this sample. The small wavelength of this transition (λ ¼ 0.86 Å) allows fordetermining the motion of the emitter on sub-Ångström length and nanosecond timescales. Published by APS, College Park, Md. |
| Databáze: | OpenAIRE |
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