Abstract
Fluorescence of BaS: Sm phosphor has been studied using a pulsed Nitrogen laser (337.1 nm) as the excitation source. The spectrum consists of a broad band in the region 540–660nm superposed by the characteristic Sm 3+ lines. Energy level splitting pattern of Sm 3+ due to crystal field effects has been calculated and relevent field parameters are evaluated. Analysis shows that Sm 3+ takes up Ba 2+ substitutional sites.
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