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100μm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。
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 50μm,while its target is made of a 100μm-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.
作者
周亮
王文川
周林
李名加
梁川
章法强
Zhou Liang;Wang Wenchuan;Zhou Lin;Li Mingjia;Liang Chuan;Zhang Faqiang(Twelfth Institute,China Electronics Technology Group Corporation,Beijing 100015,China;Institute of Nuclear Physics and Chemistry,CAEP,P.O.Box 919-212,Mianyang 621900,China)
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2020年第2期105-107,共3页
High Power Laser and Particle Beams
关键词
X光管
透射式
阴极
靶窗
X-ray tube
transmission target
cathode
target
