Christie, Arthur Carlisle, 1879- · Philadelphia ; London : Lippincott · leaf 28
Fig. 8.—Jacksons focus tube. As tubes are now constructed, the target is alwaysan anode of the tube, but it is not necessarily so. Thetarget is usually made of platinum, because the intense … Fig. 9.—Modern type of Rontgen-ray or focus tube. 1, cathode; 2, target; 3, accessoryanode; 4, vacuum regulator; 5, adjustable wire; 6, X-ray hemisphere. heat generated at the point of impact of the cathodestream requires a metal whose fusing point is veryhigh. Even platinum is not entirely…
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