X-ray source with electromagnetic pump

A liquid metal jet X-ray source is disclosed that includes an electromagnetic pump for pumping liquid metal. The electromagnetic pump includes a core having a core diameter and an outer yoke having a thickness of at least 20% of the core diameter. Preferably, the thickness of the outer yoke is at least 20% of the core diameter plus 6% of the radial distance between the outer side of the core and the inner side of the yoke. 披露了一种液态金属射流X射线源，包括用于泵送液态金属的电磁泵。电磁泵包括芯和外轭，该芯具有芯径，该外轭的厚度至少是芯径的20％。优选地，外轭的厚度至少是芯径的20％加上芯的外侧与轭的内侧之间的径向距离的6％。