title: Luminescence behavior and Raman characterization of jade from Turkey.
abstract: Results are presented for the cathodoluminescence (CL), radioluminescence (RL) and thermoluminescence (TL) of jade from Turkey. Jade samples show broad band luminescence from green to red, which, using lifetime-resolved CL, reveals seven overlapping emissions, of which two are dominant. Green emission obtained using spatially resolved CL was associated with Mn(2+) and emission bands centered near at 480 and 530 nm were attributed to (3)P(0)-(3)H(4) and (1)D(2)-(3)H(4) transitions of Pr(3+), respectively. Different shifts of the peak-wavelengths for 326 and 565 nm were observed with varying jade compositions. The incorporation of the larger K ion causes non-linear variations of the cell dimensions and therefore changes in the Fe-O band distance. We suggest that stress of the jade structure can be linked to the luminescence emission at 326 nm. Raman spectra have also been recorded in order to provide an unequivocal identification of the type of jade. The mechanism for the luminescence of the jade is considered.
authors: Physics Department, Faculty of Arts and Sciences, Celal Bayar University, Muradiye-Manisa, Turkey.
authors: Y Tuncer
authors: YT
authors: Arslanlar
authors: J
authors: J
authors: Garcia-Guinea
authors: R
authors: R
authors: Kibar
authors: A
authors: A
authors: Cetin
authors: M
authors: M
authors: Ayvacikli
authors: N
authors: N
authors: Can