Fig. 5: Application of (1,4-CMA)PbBr4 scintillator in fast radiation detection and imaging.
From: Atomically confined excitons in 2D perovskites for bright and sub-nanosecond scintillation
a Integrated charge spectra for 511 keV photons along with the intervals filtered by different response voltages. b Decay curves collected by the two opposite detectors, and the location (Δx) can be calculated based on the time difference (Δτ) via Δx = Δτc/n. c, the speed of light in a vacuum; n, the refractive index of the medium. c Delay time histograms of LYSO:Ce,Ca against (1,4-CMA)PbBr4 before (orange line) and after (red line) photopeak event selection. d Delay time histograms of (1,4-CMA)PbBr4 before photopeak event selection (blue line) and after photopeak event selection with different filters (orange, black and red lines). The FWHMs are extracted using a Gaussian fit. The inset is the enlarged curve of the red line showing the Coincidence time resolution (CTR) of 43.3 ps. e CTR comparison of state-of-the-art scintillators. f Advantages of the high timing resolution in reconstruction-free PET imaging, and the corresponding spatial precision. g Dynamic X-ray imaging of a moving screw by (1,4-CMA)PbBr4 and commercial CsI:Tl scintillator. The scale bar represents 5 mm. h Modulation transfer function (MTF) curve. i X-ray image of the standard X-ray resolution pattern plate. j High-resolution X-ray images (campus card, chip, bird leg). The bird leg specimen used for X-ray imaging was obtained from a commercial food market; no live animals were used in this experiment. The scale bar represents 1 cm.
