
Abstract The luminescence of the following ions with s 2 configuration was studied in lithium hydride (LiH) crystals: Ge 2+ , Sn 2+ , Sb 3+ , Pb 2+ , and Bi 3+ . Their emission spectra show pronounced vibrational structure. These are discussed in terms of A T and A X emission with underlying trap levels. The temperature dependences of the decay times confirm such a model. The presence of more than one type of center and of lithium colloids prevents a complete analysis.
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