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Optimizing the energy bandwidth for transmission full-field X-ray microscopy experiments

Authors :
Malte Storm
Florian Döring
Shashidhara Marathe
Silvia Cipiccia
Christian David
Christoph Rau
Source :
Journal of Synchrotron Radiation, Vol 29, Iss 1, Pp 138-147 (2022)
Publication Year :
2022
Publisher :
International Union of Crystallography, 2022.

Abstract

Full-field transmission X-ray microscopy (TXM) is a very potent high-resolution X-ray imaging technique. However, it is challenging to achieve fast acquisitions because of the limited efficiency of the optics. Using a broader energy bandwidth, for example using a multilayer monochromator, directly increases the flux in the experiment. The advantage of more counts needs to be weighed against a deterioration in achievable resolution because focusing optics show chromatic aberrations. This study presents theoretical considerations of how much the resolution is affected by an increase in bandwidth as well as measurements at different energy bandwidths (ΔE/E = 0.013%, 0.27%, 0.63%) and the impact on achievable resolution. It is shown that using a multilayer monochromator instead of a classical silicon double-crystal monochromator can increase the flux by an order of magnitude with only a limited effect on the resolution.

Details

Language :
English
ISSN :
16005775 and 55104045
Volume :
29
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Journal of Synchrotron Radiation
Publication Type :
Academic Journal
Accession number :
edsdoj.02050c55104045228d251b3db99feef7
Document Type :
article
Full Text :
https://doi.org/10.1107/S1600577521011206