Indirect detector for ultra-high-speed X-ray micro-imaging with increased sensitivity to near-ultraviolet scintillator emission

Lukić B, Rack A, Helfen L, Foster DJ, Ershov A, Welß R, François S, Rochet X (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Journal of Synchrotron Radiation International Union of Crystallography

Book Volume: 31

Pages Range: 1224-1233

DOI: 10.1107/S1600577524007306

Abstract

Ultra-high-speed synchrotron-based hard X-ray (i.e. above 10 keV) imaging is gaining a growing interest in a number of scientific domains for tracking non-repeatable dynamic phenomena at spatio-temporal microscales. This work describes an optimized indirect X-ray imaging microscope designed to achieve high performance at micrometre pixel size and megahertz acquisition speed. The entire detector optical arrangement has an improved sensitivity within the near-ultraviolet (NUV) part of the emitted spectrum (i.e. 310-430 nm wavelength). When combined with a single-crystal fast-decay scintillator, such as LYSO:Ce (Lu2-xYxSiO5:Ce), it exploits the potential of the NUV light-emitting scintillators. The indirect arrangement of the detector makes it suitable for high-dose applications that require high-energy illumination. This allows for synchrotron single-bunch hard X-ray imaging to be performed with improved true spatial resolution, as herein exemplified through pulsed wire explosion and superheated near-nozzle gasoline injection experiments at a pixel size of 3.2 μm, acquisition rates up to 1.4 MHz and effective exposure time down to 60 ps.

Authors with CRIS profile

Richard Welß Professur für Fluidsystemtechnik

Involved external institutions

European Synchrotron Radiation Facility (ESRF) FR France (FR) Karlsruhe Institute of Technology (KIT) DE Germany (DE) Optique Peter FR France (FR)

How to cite

APA:

Lukić, B., Rack, A., Helfen, L., Foster, D.J., Ershov, A., Welß, R.,... Rochet, X. (2024). Indirect detector for ultra-high-speed X-ray micro-imaging with increased sensitivity to near-ultraviolet scintillator emission. Journal of Synchrotron Radiation, 31, 1224-1233. https://doi.org/10.1107/S1600577524007306

MLA:

Lukić, Bratislav, et al. "Indirect detector for ultra-high-speed X-ray micro-imaging with increased sensitivity to near-ultraviolet scintillator emission." Journal of Synchrotron Radiation 31 (2024): 1224-1233.

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