| 摘要 |
An anode for an X-ray source is formed in two parts, a main part ( 18 ) and a collimating part ( 22 ). The main part ( 18 ) has the target region ( 20 ) formed on it. The two parts between them define an electron aperture ( 36 ) through which electrons pass reach the target region ( 20 ), and an X-ray aperture through which the X-rays produced at the target leave the anode. The anode produces at least the first stage of collimation of the X-ray beam produced.
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