title: Thermoluminescence properties of Li2CO3-K2CO3-H3BO3glass system co-doped with CuO and MgO.
abstract: The thermoluminescent properties of boric glass modified with lithium and potassium carbonates (LKB) and co-doped with CuO and MgO are reported for the first time. Two techniques are applied to investigate the effect of dopants and co-dopants on the thermal stimulation properties of LKB. The induced TL glow curves of a CuO-doped sample are found to be at 220°C with a single peak. An enhancement of about three times is shown with the increment of 0.1 mol % MgO as a co-dopant impurity. This enhancement may contribute to the ability of magnesium to create extra electron traps and consequently the energy transfer to monovalent Cu(+) ions. LKB:Cu,Mg is low Z material (Zeff=8.55), and observed 15 times less sensitive than LiF: Mg, Ti (TLD-100). The proposed dosemeter showed good linearity in TL dose-response, low fading and excellent reproducibility with a simple glow curve, and thus, can be used in the radiation dosimetry.
authors.affiliation: Department of Physics, Universiti Teknologi Malaysia, Skudai, Johor 81310, Malaysia. yasser_ajr@hotmail.com
authors.forename: Yasser Saleh Mustafa
authors.initials: YS
authors.lastname: Alajerami
authors.forename: Suhairul
authors.initials: S
authors.lastname: Hashim
authors.forename: Ahmad Termizi
authors.initials: AT
authors.lastname: Ramli
authors.forename: Muneer Aziz
authors.initials: MA
authors.lastname: Saleh
authors.forename: Taiman
authors.initials: T
authors.lastname: Kadni
mesh_terms: D001888:Boric Acids / Q000737:chemistry*; D002254:Carbonates / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D018020:Lithium Compounds / Q000737:chemistry*; D008277:Magnesium Oxide / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry*; D011829:Radiation Dosage; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods; D014961:X-Ray Diffraction
chemical_list: D001888:Boric Acids; D002254:Carbonates; D018020:Lithium Compounds; D008277:Magnesium Oxide; D003300:Copper; C037593:potassium carbonate; D011188:Potassium; C030973:cupric oxide