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Electrostatic Suppression of Ion Feedback in a Microchannel Plate Photomultiplier
Electrostatic Suppression of Ion Feedback in a Microchannel Plate Photomultiplier
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机译:微通道板光电倍增管中离子反馈的静电抑制
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摘要
A photomultiplier tube having an ion suppression electrode positioned between a photocathode and an electron multiplying device in the photomultiplier tube is disclosed. The ion suppression electrode includes a grid that is configured to provide sufficient rigidity to avoid deformation during operation of the photomultiplier tube. The photomultiplier tube also includes a source of electric potential connected to the electron multiplying device and to the ion suppression electrode to provide a first voltage to the second electrode and a second voltage to the suppression grid electrode wherein the second voltage has a magnitude equal to or greater than the magnitude of the first voltage. A method of making the photomultiplier and a method of using it are also disclosed.
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