High-flux ptychographic imaging using the new 55 μm-pixel detector 'Lambda' based on the Medipix3 readout chip
(2014) In Acta Crystallographica Section A: Foundations and Advances 70. p.552-562- Abstract
Suitable detection systems that are capable of recording high photon count rates with single-photon detection are instrumental for coherent X-ray imaging. The new single-photon-counting pixel detector 'Lambda' has been tested in a ptychographic imaging experiment on solar-cell nanowires using Kirkpatrick-Baez-focused 13.8 keV X-rays. Taking advantage of the high count rate of the Lambda and dynamic range expansion by the semi-transparent central stop, a high-dynamic-range diffraction signal covering more than seven orders of magnitude has been recorded, which corresponds to a photon flux density of about 105 photons nm-2 s-1 or a flux of ∼1010 photons s-1 on the sample. By... (More)
Suitable detection systems that are capable of recording high photon count rates with single-photon detection are instrumental for coherent X-ray imaging. The new single-photon-counting pixel detector 'Lambda' has been tested in a ptychographic imaging experiment on solar-cell nanowires using Kirkpatrick-Baez-focused 13.8 keV X-rays. Taking advantage of the high count rate of the Lambda and dynamic range expansion by the semi-transparent central stop, a high-dynamic-range diffraction signal covering more than seven orders of magnitude has been recorded, which corresponds to a photon flux density of about 105 photons nm-2 s-1 or a flux of ∼1010 photons s-1 on the sample. By comparison with data taken without the semi-transparent central stop, an increase in resolution by a factor of 3-4 is determined: from about 125 nm to about 38 nm for the nanowire and from about 83 nm to about 21 nm for the illuminating wavefield.
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- author
- Wilke, R. N. ; Wallentin, J. LU ; Osterhoff, M. ; Pennicard, D. ; Zozulya, A. ; Sprung, M. and Salditt, T.
- publishing date
- 2014-11-01
- type
- Contribution to journal
- publication status
- published
- keywords
- coherent diffractive imaging, Lambda detector, Medipix3 chip, phase retrieval, ptychography, semi-transparent beam stop, semi-transparent central stop, solar-cell nanowires
- in
- Acta Crystallographica Section A: Foundations and Advances
- volume
- 70
- pages
- 11 pages
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:84992735831
- ISSN
- 2053-2733
- DOI
- 10.1107/S2053273314014545
- language
- English
- LU publication?
- no
- id
- 5c361504-0a37-4b6c-af03-75f939bfef65
- date added to LUP
- 2017-12-13 16:34:11
- date last changed
- 2023-11-17 12:25:38
@article{5c361504-0a37-4b6c-af03-75f939bfef65, abstract = {{<p>Suitable detection systems that are capable of recording high photon count rates with single-photon detection are instrumental for coherent X-ray imaging. The new single-photon-counting pixel detector 'Lambda' has been tested in a ptychographic imaging experiment on solar-cell nanowires using Kirkpatrick-Baez-focused 13.8 keV X-rays. Taking advantage of the high count rate of the Lambda and dynamic range expansion by the semi-transparent central stop, a high-dynamic-range diffraction signal covering more than seven orders of magnitude has been recorded, which corresponds to a photon flux density of about 10<sup>5</sup> photons nm<sup>-2</sup> s<sup>-1</sup> or a flux of ∼10<sup>10</sup> photons s<sup>-1</sup> on the sample. By comparison with data taken without the semi-transparent central stop, an increase in resolution by a factor of 3-4 is determined: from about 125 nm to about 38 nm for the nanowire and from about 83 nm to about 21 nm for the illuminating wavefield.</p>}}, author = {{Wilke, R. N. and Wallentin, J. and Osterhoff, M. and Pennicard, D. and Zozulya, A. and Sprung, M. and Salditt, T.}}, issn = {{2053-2733}}, keywords = {{coherent diffractive imaging; Lambda detector; Medipix3 chip; phase retrieval; ptychography; semi-transparent beam stop; semi-transparent central stop; solar-cell nanowires}}, language = {{eng}}, month = {{11}}, pages = {{552--562}}, publisher = {{John Wiley & Sons Inc.}}, series = {{Acta Crystallographica Section A: Foundations and Advances}}, title = {{High-flux ptychographic imaging using the new 55 μm-pixel detector 'Lambda' based on the Medipix3 readout chip}}, url = {{http://dx.doi.org/10.1107/S2053273314014545}}, doi = {{10.1107/S2053273314014545}}, volume = {{70}}, year = {{2014}}, }