Luminescence of Bi, Ag and Cu in natural and synthetic barite BaSO4

M. Gaft*, R. Reisfeld, G. Panczer, G. Boulon, T. Saraidarov, S. Erlish

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

The time-resolved laser-induced luminescence of natural barite BaSO4 is compared with synthetically prepared BaSO4-Bi, BaSO4-Ag and BaSO4-Cu. It is deduced that in natural barite the narrow orange band with λmax = 625 nm, Δ = 40 nm and τ = 5 μs is connected with Bi2+ center. The narrow violet band with λmax = 625 nm, Δ = 35 nm and τ = 1.7 ms is connected with Bi3+ center. The broad red band with λmax = 635 nm, Δ = 140 nm and τ = 270 μs is connected with Ag+ center. The broad red band with λmax = 750 nm, Δ = 110 nm and τ = 350 μs is connected with Cu+ center. Such luminescence centers are firstly considered in minerals.

Original languageEnglish
Pages (from-to)279-290
Number of pages12
JournalOptical Materials
Volume16
Issue number1-2
DOIs
StatePublished - 2001

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