| DOI | Resolve DOI: https://doi.org/10.1016/j.ultramic.2013.02.021 |
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| Author | Search for: McLeod, Robert A.1; Search for: Malac, Marek1 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | Slow-scan CCD detector; CCD camera; Electron detection; Scintillator; Modulation transfer function (MTF); Point spread function (PSF); Noise transfer function (NTF); Noise power spectrum (NPS); Incomplete read-out; Detector quantum efficiency (DQE); Detector noise; Electron holography; Transmission electron microscopy (TEM); Gain reference; Reference images |
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| Abstract | We developed a new method for characterization of detector performance used in the transmission electron microscope (TEM) based on the measured contrast of holographic fringes. The new method changes spatial frequency of the measured holographic fringes, generated by an electrostatic biprism and Schottky or cold field-emission gun, to sample the modulation-transfer function (MTF) of the detector. The MTF of a Gatan Ultrascan™ 1000 charged-coupled detector (CCD) is evaluated using the new method and the results are compared to the established noise and slanted-edge method results. Requirements for accuracy of the edge and noise MTF methods are discussed. We consider issues surrounding incomplete read-out and how it affects the gain reference normalization of the detector. We evaluate how the MTF affects optimization of experimental parameters in the TEM. © 2013 Elsevier B.V. |
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| Publication date | 2013-03-14 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21271873 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 26dfbc02-49e2-471e-ae97-fdaeb51c9882 |
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| Record created | 2014-04-24 |
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| Record modified | 2020-04-22 |
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