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测量了经６０ＣｏＹ辐照的热释光材料ＬｉＦ：Ｍｇ，Ｔｉ．ＬｉＦ：Ｍｇ，Ｃｕ，Ｐ和ＭｇＳＯ４的正电子湮没寿命谱，所有寿命谱都分解成三个成分。两种不同掺杂的ＬｉＦ样品，其成分寿命参数十分接近，表明正离子空位对寿命谱影响较小；并且观察到，在剂量范围为０．０５－１ｋＧｙ内，ｉ２成分寿命参数随剂量按相反趋势发生较小的变化。等时退火实验表明，ＭｇＳＯ４样品的ｉ２和ｉ３成分与硫酸基有关，其大小可能取决于Ｍｇ２＋空位和不同的硫酸基构成的复合体以及复合体之间形成的竞争
The thermoluminescent material LiF: Mg, Ti irradiated by 60CoY was measured. LiF: positron annihilation lifetime spectra of Mg, Cu, P, and MgSO4, all of which are decomposed into three components. The lifetime parameters of two different doped LiF samples are very close, which shows that the positive ion vacancy has little effect on the lifetime spectrum. It is also observed that in the range of 0.05-1kGy, the life parameter of i2 component varies with dose Minor changes occur in the trend. Isochronous annealing experiments showed that the i2 and i3 components of the MgSO4 sample are related to the sulfate group, and the size may depend on the competition between complexes formed by Mg2 + vacancies and different sulfate groups and complexes