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1972年 P.Horowitz 和 A.Howell 等人,首先使用同步加速器作辐射源做 X-射线荧光分析,为分析化学提供了一个新的手段。众所周知,X-射线荧光分析,是以 X-射线束作为探针入射到试样中,根据不同元素产生的特征 X-射线荧光去标识元素的。它是一种直接和较简便的方法。但是,常规手段产生的 X-射线强度较弱,而入射 X-射线束的强度又决定了它的分辨率,且在大气中很难准直,本底也比较高。同步辐射加速器作为 X-射线源,则能量可变,强度高且稳定,分辨率较高,准直性好,对分析工作较为有利,可以较大辐度提高方法的灵敏度和准确度。
In 1972, P. Horowitz and A. Howell first used X-ray fluorescence analysis with a synchrotron as a radiation source, which provided a new analytical method for chemistry. It is well-known that X-ray fluorescence analysis is based on the X-ray beam as a probe incident on the sample, according to the characteristics of different elements X-ray fluorescence to identify the elements. It is a direct and easy way. However, the X-ray produced by conventional means is weaker, and the intensity of the incident X-ray beam, in turn, determines its resolution and is difficult to collimate in the atmosphere and the background is relatively high. As an X-ray source, the synchrotron radiation accelerator has the advantages of variable energy, high intensity and stability, high resolution and good collimation, which is beneficial to the analysis and can increase the sensitivity and accuracy of the method with greater intensity.