title: Further studies on the role of dopants in LiF:Mg,Cu,Si thermoluminescent material.
abstract: The 3-D thermoluminescence spectra and glow curves of LiF:Mg,Cu,Si, LiF:Mg,Cu, LiF:Mg,Si and LiF:Cu,Si with low concentrations of Mg and Cu were measured and were compared with those with high concentrations to investigate further the role of dopants in LiF:Mg,Cu,Si material. The shape of glow curves of the four samples is similar; however, LiF:Cu,Si sample had no Mg dopant. It is concluded that the TL emission to be from self-trapped excitons in LiF, and this emission could be enhanced and altered by Mg, Cu and Si dopants in LiF:Mg,Cu,Si; all three dopants are necessary to obtain the bright TL emission and may be involved in the luminescence process; Mg seems to be the most essential dopant and Cu is involved in the trapping although the role of Mg dominates; both Cu and Si play a role in the main emission process and Cu also plays a role in reducing the emission around 610 nm.
authors: State Key Laboratory of NBC Protection for Civilian, PO Box 1044 Ext. 200, Beijing 102205, P.R. China Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, P.R. China kaiyongtang@yahoo.com.
authors: K
authors: K
authors: Tang
authors: Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, P.R. China.
authors: H
authors: H
authors: Fan
authors: Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, P.R. China.
authors: H
authors: H
authors: Cui
authors: Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, P.R. China.
authors: H
authors: H
authors: Zhu
authors: Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 204, Beijing 102205, P.R. China.
authors: Z
authors: Z
authors: Liu
mesh_terms: D003300:Copper / Q000737:chemistry* / Q000528:radiation effects; D004307:Dose-Response Relationship, Radiation; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005459:Fluorides / Q000737:chemistry* / Q000528:radiation effects; D018020:Lithium Compounds / Q000737:chemistry* / Q000528:radiation effects; D008274:Magnesium / Q000737:chemistry* / Q000528:radiation effects; D008422:Materials Testing; D011829:Radiation Dosage; D011835:Radiation Protection / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012825:Silicon / Q000737:chemistry* / Q000528:radiation effects; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation*
chemical_list: D018020:Lithium Compounds; C027651:lithium fluoride; D003300:Copper; D008274:Magnesium; D005459:Fluorides; D012825:Silicon