Electron volt energy resolution with ptychography using a broadband continuum spectrum
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866911182892302336 |
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| author | Cipiccia, Silvia Stolp, Wiebe Fardin, Luca Ziesche, Ralf Manke, Ingo Boone, Matthieu Armstrong, Chris Olivo, Alessandro Batey, Darren |
| author_facet | Cipiccia, Silvia Stolp, Wiebe Fardin, Luca Ziesche, Ralf Manke, Ingo Boone, Matthieu Armstrong, Chris Olivo, Alessandro Batey, Darren |
| contents | Ptychography is a scanning coherent diffraction imaging technique successfully applied in the electron, visible and x-ray regimes. One of the distinct features of ptychography with respect to other coherent diffraction techniques is its capability of dealing with partial spatial and temporal coherence via the reconstruction algorithm. Here we focus on the temporal and clarify theoretically and with simulations the constraints which affect the energy resolution limits of the ptychographic algorithms. Based on this, we design and perform simulations for a broadband ptychography in the hard x-ray regime, which enables an energy resolution down to 1 eV. We benchmark the simulations against experimental ptychographic data from a nickel test sample, by extracting the x-ray absorption near edge spectrum with energy resolution of 5 eV using a continuum spectrum of 20 eV bandwidth. We review the results, discuss the limitations, and provide guidelines for future broadband ptychography experiments, its prospective applications and potential impact on achieving diffraction limited resolutions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_00703 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electron volt energy resolution with ptychography using a broadband continuum spectrum Cipiccia, Silvia Stolp, Wiebe Fardin, Luca Ziesche, Ralf Manke, Ingo Boone, Matthieu Armstrong, Chris Olivo, Alessandro Batey, Darren Applied Physics Computational Physics Ptychography is a scanning coherent diffraction imaging technique successfully applied in the electron, visible and x-ray regimes. One of the distinct features of ptychography with respect to other coherent diffraction techniques is its capability of dealing with partial spatial and temporal coherence via the reconstruction algorithm. Here we focus on the temporal and clarify theoretically and with simulations the constraints which affect the energy resolution limits of the ptychographic algorithms. Based on this, we design and perform simulations for a broadband ptychography in the hard x-ray regime, which enables an energy resolution down to 1 eV. We benchmark the simulations against experimental ptychographic data from a nickel test sample, by extracting the x-ray absorption near edge spectrum with energy resolution of 5 eV using a continuum spectrum of 20 eV bandwidth. We review the results, discuss the limitations, and provide guidelines for future broadband ptychography experiments, its prospective applications and potential impact on achieving diffraction limited resolutions. |
| title | Electron volt energy resolution with ptychography using a broadband continuum spectrum |
| topic | Applied Physics Computational Physics |
| url | https://arxiv.org/abs/2409.00703 |