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dynode |
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dynode [dī′nōd] one of a series of platelike elements that amplify electron pulses in a photomultiplier tube. Each electron that strikes a dynode causes several secondary electrons to be emitted. The dynode gain is the ratio of the number of secondary electrons to the number of incident electrons. 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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For comparison purposes, the sixth light guide was affixed to a Burle 8850 2 inch PMT which has a higher gain first dynode. The electrons are amplfied (caused to increase in number) by a chain of dynodes in process called "stimulated emission," producing a "shower" of electrons that makes an electrical pulse. The monochromator is coupled to a 9-stage dynode R237 1 PMT mounted in a shielded temperature regulated semi-hermetic enclosure. |
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