电子倍增器增益特性的实验测定

THE EXPERIMENTAL DETERMINATION OF THE GAIN CHARACTERISTIC CURVES OF ELECTRON MULTIPLIER

用电子能谱仪中改变能量分析器通能的办法,将Ni3p光电子减速成不同能量后送入电子倍增器,从而测定了倍增器的增益随电子能量的变化曲线.发现在不同工作电压下,增益特性有所不同.观察了这一特性对测量俄歇微商谱峰-峰高度的影响.

The gain vs electron energy characteristic curves of an electron multiplier have been measured in an electron spectrometer by changing the pass energy of its energy analyser to introduce the Ni3p photoelectrons with different energy into the electron multiplier. It is found that the gain character varies with different multiplier voltages. The effect of this character On the measurement of AES peak-to-peak heights has been investigated.