Study of crystal structure and PL properties of Na21Mg(SO4)10Cl3 :Ce halophosphor

A new phosphor Na21Mg(SO4)10Cl3 is very interesting for photoluminescence (PL) properties. In this paper we present results concerning the main PL properties of Na21Mg(SO4)10Cl3 activated by Ce at various concentrations. Polycrystalline Na21Mg(SO4)10Cl3: Ce phosphor prepared by wet chemical method have been studied for its PL characteristics showing Ce3+ emission at 341 nm at the excitation of 247 nm due to 5d → 4f transition, This is a good result for the materials which can be used in scintillation applications

Synthesis and Photoluminescence characterization of NaMgSO4F: Ce phosphor

Ce3+ emission in NaMg(SO4)F  phosphor prepared by wet chemical method is reported in this paper. The synthesized phosphor is characterized by X-ray diffraction, photoluminescence excitation and emission spectra. The emission spectra shows a dominant peak at 349 nm due to the 5d→4f transition of Ce3 + when monitored at excitation wavelength of 263 nm. In this host very low concentration of cerium is used. The characteristic emission of the NaMg(SO4)F  phosphor in the UV region of spectrum makes it a strong candidate for the use in scintillation applications

Photoluminescence of Ce3+ ions doped in LiAl5O8 aluminate systems

The aluminate phosphors LiAl5O8: Ce was synthesized by combustion synthesis. Photoluminescence (PL) characterization of the phosphors has been reported in this paper. The Photoluminescence (PL) emission spectra of the LiAl5O8: Ce phosphors show strong Ce3+ emission at around 310 nm for the excitation at wavelength of 254 nm wavelength of light due to the 5d→ 4f transition. These phosphors may be useful in scintillation

Thermoluminescence (TL) kinetics of CaSO4 and LiF standard materials: a comparative study

In this paper we present comparative reports on CaSO4 and LiF standard materials. CaSO4: Mn has a very high sensitivity but fading of the dosimetry peaks is relatively rapid. The CaSO4: Tm and CaSO4: Dy each has a stable glow peak at about 220°C.  LiF has an effective Z of 8.2 (of. 7.4 for tissue) and the energy response relative to tissue is good. Both the materials are available commercially

Comparative study of Ce3+ activated chlorosulphate phosphors

The synthesis, X-ray diffraction (XRD) and photoluminescence characteristics in chloride based halosulphate phosphors, such as KZnSO4Cl: Ce; KMgSO4Cl: Ce; have been reported in this paper. The Ce3+ emission in KMgSO4Cl: Ce phosphor is more intense than KZnSO4Cl: Ce and it may be useful for scintillation applications

Luminescence in Ce

A new halosulphate phosphor NaMgSO4F:Ce3+ and Na3SO4F:Ce3+ was synthesized by wet chemical method. The PL emission spectra of phosphors show strong Ce3+ emission due to the $5d\to 4f$ transition of Ce3+ ions. Ce3+ emission in new halosulphates NaMgSO4F and Na3SO4F lattice may be useful for a scintillation application. XRD and photoluminescence (PL) characterization of phosphors has been reported in this paper

TL in halosulphate phosphors prepared by wet chemical method

Polycrystalline halosulphate phosphors are prepared by a wet chemical method. Strong thermoluminescence (TL) was observed in KZnSO4Cl, KMgSO4Cl, Na3SO4F and NaMgSO4F hosts. In these hosts Ce, Dy; Ce, Mn and Ce, Tb the Ce3+ ions acting as sensitizers and Dy3+, Mn2+and Tb3+ ions as activators. The TL glow curves of these halosulphate phosphors exposed to γ-rays for 5 Gy at the rate of 0.995 kGyh-1 are described and discussed first time here