title: Thermoluminescence and photoluminescence in the NaCaPO4:Dy3+ phosphor.
abstract: Dy(3+)-doped NaCaPO(4) phosphor was synthesised at an initiating combustion temperature of 600°C, using urea as the fuel. The crystallinity of the phosphor was investigated by using X-ray diffraction. The photoluminescence and thermoluminescence (TL) behaviours of NaCaPO(4):Dy(3+) phosphor was also studied. It has a simple TL glow curve structure, which does not change when exposed to gamma-rays. A TL glow peak is observed at 230°C and TL intensity is around 1.15 times more compared with commercial CaSO(4):Dy TLD phosphor. The TL characteristics of the phosphor prepared show that it has good sensitivity, linear response with gamma-rays exposure, emission in the blue-yellow regions of the spectrum, negligible fading and excellent reusability. These results make Dy(3+)-doped NaCaPO(4) phosphor attractive for TLD applications.
authors.affiliation: Department of Physics, N.S. Science and Arts College, Bhadrawati 442902, India. kartik_shinde@rediffmail.com
authors.forename: K N
authors.initials: KN
authors.lastname: Shinde
authors.forename: S J
authors.initials: SJ
authors.lastname: Dhoble
mesh_terms: D002130:Calcium Phosphates / Q000737:chemistry* / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D008163:Luminescent Measurements / Q000379:methods*; D010710:Phosphates / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D013819:Thermoluminescent Dosimetry / Q000379:methods*
chemical_list: D002130:Calcium Phosphates; D010710:Phosphates; C020243:calcium phosphate; C018279:sodium phosphate