中子活化分析技术用于测定微量元素是很方便和有效的。它的探测灵敏度高,抗干扰能力强,现已广泛地用于各种领域。 中子活化法测量物质中的微量铀,一般有二种方法。一种是通过测量铀的同位素~(235)U的某些裂变产物发射的γ射线或缓发中子,另一种是通过测定铀同位素~(238)U的直接或间接活化产物的γ射线。 Neutron activation analysis of trace elements for the determination of technology is very convenient and effective. Its detection sensitivity, anti-interference ability, is now widely used in various fields. Neutron activation method for measuring trace uranium in materials, there are two general methods. One is the measurement of γ-rays or delayed neutrons emitted by some fission products of uranium isotope 235 U, and the other is the measurement of γ-rays emitted by direct or indirect activation of uranium isotope 238 U .