Quantitative X-ray phase-contrast microtomography from a compact laser-driven betatron source

J. Wenz, S. Schleede, K. Khrennikov, M. Bech, P. Thibault, M. Heigoldt, F. Pfeiffer and S. Karsch ()
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J. Wenz: Ludwig-Maximilians-Universität München, Fakultät für Physik
S. Schleede: Lehrstuhl für Biomedizinische Physik, Technische Universität München
K. Khrennikov: Ludwig-Maximilians-Universität München, Fakultät für Physik
M. Bech: Lehrstuhl für Biomedizinische Physik, Technische Universität München
P. Thibault: Lehrstuhl für Biomedizinische Physik, Technische Universität München
M. Heigoldt: Ludwig-Maximilians-Universität München, Fakultät für Physik
F. Pfeiffer: Lehrstuhl für Biomedizinische Physik, Technische Universität München
S. Karsch: Ludwig-Maximilians-Universität München, Fakultät für Physik

Nature Communications, 2015, vol. 6, issue 1, 1-6

Abstract: Abstract X-ray phase-contrast imaging has recently led to a revolution in resolving power and tissue contrast in biomedical imaging, microscopy and materials science. The necessary high spatial coherence is currently provided by either large-scale synchrotron facilities with limited beamtime access or by microfocus X-ray tubes with rather limited flux. X-rays radiated by relativistic electrons driven by well-controlled high-power lasers offer a promising route to a proliferation of this powerful imaging technology. A laser-driven plasma wave accelerates and wiggles electrons, giving rise to a brilliant keV X-ray emission. This so-called betatron radiation is emitted in a collimated beam with excellent spatial coherence and remarkable spectral stability. Here we present a phase-contrast microtomogram of a biological sample using betatron X-rays. Comprehensive source characterization enables the reconstruction of absolute electron densities. Our results suggest that laser-based X-ray technology offers the potential for filling the large performance gap between synchrotron- and current X-ray tube-based sources.

Date: 2015
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DOI: 10.1038/ncomms8568

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