title: Thermal and electron stimulated luminescence of natural bones, commercial hydroxyapatite and collagen.
abstract: The luminescence (cathodoluminescence and thermoluminescence) properties of natural bones (Siberian mammoth and adult elephant), commercial hydroxyapatite and collagen were analyzed. Chemical analyses of the natural bones were determined using by Electron Probe Micro-Analysis (EMPA). Structural, molecular and thermal characteristics were determined by X-ray Diffraction (XRD), Raman spectroscopy and Differential Thermal and Thermogravimetric analysis (DTA-TG). Cathodoluminescence (CL) spectra of natural bones and collagen showed similar intense broad bands at 440 and 490 nm related to luminescence of the tetrahedral anion [Formula: see text] or structural defects. A weaker luminescence exhibited at 310 nm could be attributed to small amount of rare earth elements (REEs). Four luminescent bands at 378, 424, 468 and 576 nm were observed in the commercial hydroxyapatite (HAP). Both natural bones and collagen samples exhibited natural thermoluminescence (NTL) with well-defined glow curves whereas that the induced thermoluminescence (ITL) only appears in the samples of commercial hydroxyapatite and collagen. Additional explanations for the TL anomalous fading of apatite, as a crucial difficulty performing dosimetry and dating, are also considered.
authors.affiliation: CICATA-IPN, Legaria 694, 11500 México D.F., México; CIEMAT, Av. Complutense 22, 28040 Madrid, Spain. Electronic address: holand_jeos@hotmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Roman-Lopez
authors.affiliation: CIEMAT, Av. Complutense 22, 28040 Madrid, Spain.
authors.forename: V
authors.initials: V
authors.lastname: Correcher
authors.affiliation: Museo Nacional de Ciencias Naturales (CSIC), Jose Gutierrez Abascal 2, 28006 Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Garcia-Guinea
authors.affiliation: CICATA-IPN, Legaria 694, 11500 México D.F., México.
authors.forename: T
authors.initials: T
authors.lastname: Rivera
authors.affiliation: CICATA-IPN, Legaria 694, 11500 México D.F., México.
authors.forename: I B
authors.initials: IB
authors.lastname: Lozano
mesh_terms: D000818:Animals; D001842:Bone and Bones / Q000737:chemistry*; D002417:Cattle; D003094:Collagen / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D004606:Elephants; D049449:Luminescence; D008163:Luminescent Measurements; D056665:Mammoths; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
chemical_list: D003094:Collagen; D017886:Durapatite
keywords: Cathodoluminescence; Collagen; Hydroxyapatite; Natural bones; Thermoluminescence