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Low-Energy Single-Electron Detector with Submicron Resolution
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DOI：10.1021/acsphotonics.5c02404.png)
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Single-electron detectors are a key component of electron microscopes and advanced electron optics experiments. We present a scintillator-based single-electron detector with an estimated spatial resolution of 0.9 mu m at an electron energy of 17 keV. Single-electron detection events are identified with an efficiency and purity larger than 0.8 at an electron energy of 17 keV, reaching 0.96 at 30 keV. We show that the detector enables electron diffraction studies with a sample-detector distance comparable to the mean free path of electrons at atmospheric pressure, potentially enabling atmospheric electron diffraction studies.
Keyword:
Single-electron detection
low-energy electron detector
scintillator-based detector
YAG
Ce scintillator
high-resolution electron detection
electron diffractionat atmospheric pressure
Air-SEM
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6.7
论文数:
5.6K
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2.5W
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