Wide field imaging spectrometer for ESA's future X-ray mission: XEUS

AbstractClassical X-ray mirror optics usually has a limited Field of View (FoV) of ∼ 1°. Wide-field imaging can be achieved by lobster-eye type reflecting X-ray optics. We summarise several different approaches and suggest an innovative technology for the production of X-ray reflecting flats and cells necessary to develop one- or two-dimensional wide-field X-ray optics. The technology is based on double-sided, replicated reflecting foils produced by electroforming and CF/composite technologies.

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Wide field imaging energy dispersive X-ray absorption spectroscopy

Scientific Reports ◽

10.1038/s41598-019-54287-8 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 1

Author(s):

Peng Qi ◽

Nazanin Samadi ◽

Mercedes Martinson ◽

Olena Ponomarenko ◽

Bassey Bassey ◽

...

Keyword(s):

Computed Tomography ◽

Spatial Resolution ◽

Absorption Spectroscopy ◽

Energy Dispersive ◽

Horizontal Line ◽

Wide Field ◽

X Ray ◽

X Ray Absorption ◽

Field Imaging ◽

Wide Field Imaging

AbstractA new energy dispersive X-ray absorption spectroscopy (EDXAS) method is presented for simultaneous wide-field imaging and transmission X-ray absorption spectroscopy (XAS) to enable rapid imaging and speciation of elements. Based on spectral K-Edge Subtraction imaging (sKES), a bent Laue imaging system diffracting in the vertical plane was developed on a bend magnet beamline for selenium speciation. The high flux and small vertical focus, forming a wide horizontal line beam for projection imaging and computed tomography applications, is achieved by precise matching of lattice plane orientation and crystal surface (asymmetry angle). The condition generating a small vertical focus for imaging also provides good energy dispersion. Details for achieving sufficient energy and spatial resolution are demonstrated for both full field imaging and computed tomography in quantifying selenium chemical species. While this system has lower sensitivity as it uses transmission and may lack the flux and spatial resolution of a dedicated focused beamline system, it has significant potential in rapid screening of heterogeneous biomedical or environmental systems to correlate metal speciation with function.

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Wide-field imaging spectrometer for the Hyperspectral Infrared Imager (HyspIRI) mission

10.1117/12.2062768 ◽

2014 ◽

Cited By ~ 6

Author(s):

Holly A. Bender ◽

Pantazis Mouroulis ◽

Ronald J. Korniski ◽

Robert O. Green ◽

Daniel W. Wilson

Keyword(s):

Wide Field ◽

Imaging Spectrometer ◽

Infrared Imager ◽

Field Imaging ◽

Wide Field Imaging

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Wide-field Imaging System and Rapid Direction of Optical Zoom (WOZ)

10.21236/ada534705 ◽

2010 ◽

Author(s):

Greg A. Finney

Keyword(s):

Imaging System ◽

Wide Field ◽

Field Imaging ◽

Wide Field Imaging

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Camera-based localization microscopy optimized with calibrated structured illumination

Communications Physics ◽

10.1038/s42005-021-00546-y ◽

2021 ◽

Vol 4 (1) ◽

Author(s):

Martin Schmidt ◽

Adam C. Hundahl ◽

Henrik Flyvbjerg ◽

Rodolphe Marie ◽

Kim I. Mortensen

Keyword(s):

Data Analysis ◽

Super Resolution ◽

Wide Field ◽

Structured Illumination ◽

Uniform Illumination ◽

Localization Microscopy ◽

Localization And Tracking ◽

Field Imaging ◽

Wide Field Imaging ◽

Localization Information

AbstractUntil very recently, super-resolution localization and tracking of fluorescent particles used camera-based wide-field imaging with uniform illumination. Then it was demonstrated that structured illuminations encode additional localization information in images. The first demonstration of this uses scanning and hence suffers from limited throughput. This limitation was mitigated by fusing camera-based localization with wide-field structured illumination. Current implementations, however, use effectively only half the localization information that they encode in images. Here we demonstrate how all of this information may be exploited by careful calibration of the structured illumination. Our approach achieves maximal resolution for given structured illumination, has a simple data analysis, and applies to any structured illumination in principle. We demonstrate this with an only slightly modified wide-field microscope. Our protocol should boost the emerging field of high-precision localization with structured illumination.

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