Abstract
Abstract ESR and thermoluminescence (TL) phenomena induced by X-irradiation of the samples with various compositions in the Rb, SO4-MgSo4 and the Cs2SO4-MgSO4 systems were investigated in terms of the reactivities and crystallographic properties. Rb2Mg2(SO4)3 compound, which have a langbeinite structure, is formed in the Rb2SO4-MgSO4 system. ‘Compound X', which is presumably of a langbeinite structure, is formed in the Cs2SO4-MgSO4 system. The amount of Rb2Mg2(SO4)3 compound formed in the Rb2SO4-MgSO4 system, takes a maximum at the stoichiometric composition, while that of compound X in the Cs2SO4-MgSO4 system takes a maximum at a composition richer with MgSO4 than the stoichiometric composition. ESR signal intensity was dependent on the amount of Rb2Mg2(SO4)3 compound and compound X. These results suggest that SO3 − radicals are easily formed by electronic excitation in the langbeinite structure compound. A highly intensive TL resulted from the replacement of Rb+ by a small amount of Mg2+, in the Rb2SO4-...
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