| 摘要 |
The present invention relates to an X-ray tube, having a structure for realizing improvement of a magnification factor of a magnified transmission image, and an X-ray source that includes the X-ray tube. The X-ray tube includes: a target housing unit, housing an X-ray target; and an electron gun housing unit, one end of which is mounted to a side wall portion of the target housing unit. The electron gun housing unit is disposed so that a tube axis thereof intersects a tube axis of the target housing unit. The electron gun housing unit holds an electron gun while a center of an electron emission exit of the electron gun is shifted more toward an X-ray emission window side, disposed at one end of the side wall portion of the target housing unit, than the tube axis of the electron gun housing unit. By this configuration, a distance (FOD) between the X-ray emission window and the X-ray target can be shortened while maintaining an adequate electron gun output. |
