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photocurrent |
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photocurrent [¦fōd·ō′kə·rənt] (physical chemistry) An electric current induced at an electrode by radiant energy. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The scintillation light from the CsI detectors is converted to current signals using vacuum photodiodes (VPD), and the photocurrents are converted to voltages and amplified by solid-state electronics [7]. The photodiode arrays convert the red, green and blue light components into photocurrents with transimpedance amplifiers then convert the photocurrent to analog voltages. However, the proportionality constant connecting the photocurrents to the beam current may vary by a percent or more over an hour due to heating of optics, variations in the synchrotron beam position, etc. |
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