X ray tube 中文Five parts of x ray tubeX ray tube currentX ray generatorCathode ray tubeX ray generationHeel effect x ray

The X-ray Tube

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X-ray tubes provide the primary X-rays beam by which the sample is excited to fluorescence. Fine focus X-ray tubes with a fixed anode are generally used for ... X-raytubestructure X-raytubesprovidetheprimaryX-raysbeambywhichthesampleisexcitedtofluorescence.FinefocusX-raytubeswithafixedanodearegenerallyusedforTXRF.AnX-raytubeconsistofaspiralfilamentactingasthecathodeandawatercooledblockofcopperastheanode. Bothelectrodesaresealedoffinanevacuatedglass-(ceramic)-metalcylinder. ThefilamentmadeoutofTungstenwireisembeddedinanarrowsteelgroove(1mmx10mm). Thecopperblockisplattedwiththeactualtubeanodematerial.MolybdenumisprobablythemostwidelyusedanodematerialforTXRF.

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