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重点研讨通过改变探测器偏压，进而改变探测器的ＰＮ 结（有效探测灵敏区）厚度，实现对带电粒子的种类和能量鉴别的实验方法及其实际应用。实验测量了３ＭｅＶ质子和６．０５ＭｅＶ α粒子在金硅面垒探测器Ｓｉ（Ａｕ）中的能损与探测器偏压关系曲线。同时利用刻度过的探测器鉴别氘离子束轰击氘钛（ＴｉＤＸ）靶发射的带电粒子能谱。在很强的本底情况下通过调节探测器偏压（灵敏区厚度）实现了对能量相近的不同带电粒子的有效鉴别和测量。
Focus on the study by changing the detector bias, and then change the detector PN junction (effective detection sensitive area) thickness, to achieve the type of charged particles and energy experimental methods and their practical application. The energy loss of the 3MeV proton and the 6.05MeV α particle in the Si (Au) detector and the bias of the detector were measured experimentally. At the same time, we used the scaled detector to identify the energy spectrum of charged particle emitted by deuterium ion beam bombardment of TiDX targets. By adjusting the detector bias (sensitive zone thickness) under very strong background conditions, effective discrimination and measurement of different charged particles with similar energies are achieved.