Synthesis and thermoluminescence properties of SrAl 2 O 4  (EU) phosphor irradiated with cobalt-60, 6  MV and 16  MV photon beams

Pathak, Pushparaj; Kurchania, Rajnish

doi:10.1016/j.radphyschem.2015.07.009

Cited by 8 publications

(11 citation statements)

References 33 publications

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“…The determination of trapping parameters namely activation energy (E), order of kinetics (b) and frequency factor (s) have become more desirable to understand the properties and applications of the prepared phosphor [22], [23]. The parameters were calculated by using the peak shape method [1] which is based on the shape of glow curve.…”

Section: Ftir Analysismentioning

confidence: 99%

“…For the acquired glow curve, the order of kinetics (b) was determined by calculating the symmetry factor, as follows [1]:…”

Section: Order Of Kineticsmentioning

confidence: 99%

“…It is closely related to the ability of phosphor to maintain the details of exposure information up to a certain time period and it is highly dependent on temperature. The frequency factor is calculated as [1]…”

Section: Frequency Factormentioning

confidence: 99%

“…Rare earth activated aluminate based polycrystalline phosphors have many applications in electroluminescence panels, plasma display unit, light emitting diodes, fluorescent lamp, X-ray imaging plates, infra-red sensors , luminescence paints etc. In addition to these further applications of, long lasting afterglow phosphors are in radiation dosimetry, archaeological dating, and determination of natural radiation levels, environmental and retrospective dosimetry [1], [2]. The above stated applications are based on efficient radiation energy into the visible or near visible region of the electromagnetic spectrum.…”

Section: Introductionmentioning

confidence: 99%

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Rare Earth Dy3+ Activated MgSrAl10O17 Phosphors for Luminescence

2021

IJETER

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MgSrAl10O17:xDy3+ nanophosphors were fabricated by combustion method for different concentrations (x = 0, 0.0005, 0.001, 0.005, 0.01 and 0.02 mol) of Dysprosium (Dy). The synthesized nanophosphors were characterized by XRD, SEM, TEM, FTIR, PL and TL. The XRD (X-ray diffraction) showed crystalline hexagonal structure with preferred orientation of (107) plane. SEM (Scanning electron microscope) result shows the formation of nanosheets in irregular shape. TEM (transmission electron microscope) study revealed the nanoparticles within average diameter size of 30 nm. The FTIR ( fourier transform infrared spectrum) shows absorption peaks in numerous regions. TL (thermo-luminescence) properties included TL glow curves and TL response for different concentrations of Dy after exposure of 700 Gy gamma rays. TL intensity was found to increase with increase in concentration of dopant Dy and was found to show best result for x=0.02. Further PL (photoluminescence) characterization ofMgSrAl10O17:0.02 Dy3+ phosphor exhibits two main emission peaks at 484 and 575 nm due to Dy3+ ion, when excited with 350 nm wavelength.

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Section: Ftir Analysismentioning

confidence: 99%

“…For the acquired glow curve, the order of kinetics (b) was determined by calculating the symmetry factor, as follows [1]:…”

Section: Order Of Kineticsmentioning

confidence: 99%

Section: Frequency Factormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rare Earth Dy3+ Activated MgSrAl10O17 Phosphors for Luminescence

2021

IJETER

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“…These compounds have applications to thermoluminescence, used for dating and radiation monitoring [46]. …”

Section: The Lanthanide Ions Eu2+/eu3+ and Their Optical Propertiesmentioning

confidence: 99%

Characterization of Luminescent Materials with 151Eu Mössbauer Spectroscopy

Steudel

Johnson

et al. 2018

Materials

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The application of Mössbauer spectroscopy to luminescent materials is described. Many solids doped with europium are luminescent, i.e., when irradiated with light they emit light of a longer wavelength. These materials therefore have practical applications in tuning the light output of devices like light emitting diodes. The optical properties are very different for the two possible valence states Eu2+ and Eu3+, the former producing ultraviolet/visible light that shifts from violet to red depending on the host and the latter red light, so it is important to have a knowledge of their behavior in a sample environment. Photoluminescence spectra cannot give a quantitative analysis of Eu2+ and Eu3+ ions. Mössbauer spectroscopy, however, is more powerful and gives a separate spectrum for each oxidation state enabling the relative amount present to be estimated. The oxidation state can be identified from its isomer shift which is between −12 and −15 mm/s for Eu2+ compared to around 0 mm/s for Eu3+. Furthermore, within each oxidation state, there are changes depending on the ligands attached to the europium: the shift is more positive for increased covalency of the bonding ligand X, or Eu concentration, and decreases for increasing Eu–X bond length.

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Evaluation of SrAl₂O₄:Eu, Dy phosphor for potential applications in thermoluminescent dosimetry

Tang

Ehler

Brost

et al. 2021

J Applied Clin Med Phys

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Synthesis and thermoluminescence properties of SrAl 2 O 4 (EU) phosphor irradiated with cobalt-60, 6 MV and 16 MV photon beams

Cited by 8 publications

References 33 publications

Rare Earth Dy3+ Activated MgSrAl10O17 Phosphors for Luminescence

Rare Earth Dy3+ Activated MgSrAl10O17 Phosphors for Luminescence

Characterization of Luminescent Materials with 151Eu Mössbauer Spectroscopy

Evaluation of SrAl₂O₄:Eu, Dy phosphor for potential applications in thermoluminescent dosimetry

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Synthesis and thermoluminescence properties of SrAl 2 O 4 (EU) phosphor irradiated with cobalt-60, 6 MV and 16 MV photon beams

Cited by 8 publications

References 33 publications

Rare Earth Dy3+ Activated MgSrAl10O17 Phosphors for Luminescence

Rare Earth Dy3+ Activated MgSrAl10O17 Phosphors for Luminescence

Characterization of Luminescent Materials with 151Eu Mössbauer Spectroscopy

Evaluation of SrAl2O4:Eu, Dy phosphor for potential applications in thermoluminescent dosimetry

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Evaluation of SrAl₂O₄:Eu, Dy phosphor for potential applications in thermoluminescent dosimetry