强激光与粒子束, 2020, 32 (2): 025019, 网络出版: 2020-03-18
透射式X光管研制
Development of transmission target X-ray tube
摘要
X光管是X射线源的关键部件,为了研制出便携式X射线标定源,研制了一种透射式X光管。该X光管是一个密封的电子束真空二极管,其阴极为竖直的梳齿状结构,电子更容易发射;靶窗为100 μm厚的钛片;内部为真空腔,使用95陶瓷作为真空界面绝缘体,采用金属-陶瓷封接工艺,真空度达到5×10?5 Pa。实验结果表明,所研制的X光管在距靶窗20 cm处剂量约为20 mR,此时X射线的脉冲宽度约为5 ns。
Abstract
The X-ray tube is a key component of an X-ray source. An X-ray tube used for a compact nanosecond pulsed X-ray source is described in this paper. The X-ray tube is a sealed transmission target X-ray diode. Its cathode is acomb structure formed from thin tungsten sheets with thickness of 50 μm, while its target is made of a 100 μm-thick titanium film. The X-ray dose at a distance of 20 cm from the diode is 20 mR per pulse while the diode voltage is 512 kV. In this case, the full width at half maximum of the X-ray pulse is about 5 ns.
周亮, 王文川, 周林, 李名加, 梁川, 章法强. 透射式X光管研制[J]. 强激光与粒子束, 2020, 32(2): 025019. Liang Zhou, Wenchuan Wang, Lin Zhou, Mingjia Li, Chuan Liang, Faqiang Zhang. Development of transmission target X-ray tube[J]. High Power Laser and Particle Beams, 2020, 32(2): 025019.