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Si(Li)半导体电子谱仪与磁谱仪相比,具有探测效率高、价廉、制作方便,分辨率相当于许多透镜型磁谱仪,并能作全能谱测量等优点。它是目前核谱测量中常用的一种设备,对于短寿命弱放射性的测量尤为适宜。Si(Li)电子谱仪的效率刻度是谱仪作定量测量的基础。谱仪经效率刻度后,能精确测量电子谱线的相对、绝对强度。结合γ射线强度测量就能算出内转换系数,这是确定核跃迁多极性的重要方法,也是确定核素纲图中绝对跃迁数的重要方法。因此电子谱仪的效率刻度在核物理研究、同位素应用、核爆辐射场、天体辐射带等关于β及电子强度测量中是必不可少的。
Compared with the magnetic spectrometer, the Si (Li) semiconductor electronic spectrometer has the advantages of high detection efficiency, low cost, convenient manufacture, resolution equivalent to many lens-type magnetic spectrometers, and the ability to make full-spectrum spectrum measurement. It is a commonly used device in nuclear spectrometry and is particularly suitable for the measurement of short-lived and weak radioactivity. The efficiency scale of Si (Li) electron spectrometer is the basis of quantitative measurement of spectrometer. Spectrometer efficiency scale, can accurately measure the relative electron spectrum, the absolute intensity. The combination of γ-ray intensity measurements can be calculated within the conversion factor, which is an important method to determine the nuclear transition multipolarity, but also to determine the absolute number of transitions in the critical outline of the radionuclide method. Therefore, the efficiency of electronic spectrometer calibration in nuclear physics research, isotope applications, nuclear radiation field, celestial bodies radiation band and β and electron intensity measurements are essential.