Luminescence characterization of a sodium-rich feldspar

摘要: We, herein, report on the radioluminescence and thermoluminescence properties of a sodium-rich feldspar ((Na,K)[AlSi3O8]) with mean molecular composition orthoclase (Or) Albite (Ab) Or1Ab99. Despite complexity luminescence emissions sample, it is possible to determine six different emission bands at about 300, 380, 420, 460, 550 680 nm. The 300 nm can be associated structural defects related recombination process in which diffusion Na ions involved. UV-blue have following features: (i) 380 nm, typical mineral phases containing SiO4 groups, intrinsic lattice; (ii) 420 nm band presence Cu(II) close hole traps or centre formed from hole-oxygen atom adjacent two Aluminum atoms (Al-O-Al) (iii) 460 nm waveband due Ti4+. green red are, respectively, presenc...