Thermoluminescence of K2Cd2(SO4)3

Abstract

Several properties of langbeinites associated with their phase transitions are reported, but not much is known about the luminescence properties of these materials. The thermoluminescence of K2Cd2(SO4)3 is described here. Prominent peaks in K2Cd2(SO4)3 are around 350 and 475 K. Doping with samarium increases the intensity 40 times. No discontinuous changes around the phase transition temperature is observed. The glow peak at highest temperature (480 K) is isolated, and the trapping parameters obtained using various methods are in good agreement. Unlike CaSO4:Dy a single trap depth (≈ 1.5 eV) is found. Nearly second order kinetics is observed in both, the glow curve and the isothermal decay curve.

Preparation and properties of thermoluminescent materials

“…The 447 'C peak is 50% more intense than the dosimetric peak of TLD-100, and it does not show any fading. K,Cd, (SO,), This material shows an effective atomic number (about 25) higher than the previous phosphor, but belongs to the same class of compounds [50].…”

Effect of γ-radiation on thermoluminescence in rare earths doped NaMgSO4Cl material

“…The intensity of light emitted by the phosphor on being heated gives an idea of the irradiation dose given to it. Different preparation methods and properties of several thermoluminescent materials have been studied so far and it is found that mixed sulfates constitute a class of TL phosphors with good performances, especially when doped with proper activators (12)(13)(14)(15)(16). Analysis of TL glow curves has become more important in view of its applications in dating, dosimetry and defect studies.…”

Thermoluminescence characteristics of Na3SO4Cl:X (X=Ce, Dy, Mn) phosphor

“…The intensity of light emitted by the phosphor on being heated gives an idea of the irradiation dose given to it. Different preparation methods and properties of several thermoluminescent materials have been studied so far and it is found that mixed sulfates constitute a class of TL phosphors with good performances, especially when doped with proper activators (2)(3)(4)(5)(6).…”