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Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research
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PHASE DEPENDENT OPTICALLY STIMULATED LUMINESCENCE IN CU-DOPED Sr4Si3O8Cl4
Minal Takarkhede1, Yogesh More1, R R Patil2
1Institute of Science, R.T. Road, Civil Lines, Nagpur, India.
Radiation Protection Dosimetry
|January 30, 2018
Summary
Phase dependent optically stimulated luminescence (OSL) in Cu-doped Sr4Si3O8Cl4 is investigated. Materials with less strontium metasilicate showed intense OSL, suggesting potential for radiation dosimetry applications.
Area of Science:
- Solid State Physics
- Luminescence
- Materials Science
Background:
- Optically Stimulated Luminescence (OSL) is a technique used for radiation dosimetry.
- Copper-doped strontium compounds are explored for their luminescent properties.
Purpose of the Study:
- To investigate the phase-dependent optically stimulated luminescence (OSL) properties of Cu-doped Sr4Si3O8Cl4.
- To evaluate the potential of Cu-doped Sr4Si3O8Cl4 as an OSL phosphor for radiation dosimetry.
Main Methods:
- Synthesis and characterization of Cu-doped Sr4Si3O8Cl4 with varying phase compositions.
- Measurement of optically stimulated luminescence (OSL) and copper luminescence spectra.
- Comparison of OSL properties with commercial Al2O3:C.
Main Results:
- OSL intensity is inversely proportional to the amount of strontium metasilicate phase.
- Cu luminescence shows a phase-dependent shift from 350 nm to include a 450 nm band.
- Phase-pure Cu-doped Sr4Si3O8Cl4 exhibits 3.89 times higher sensitivity than Al2O3:C.
Conclusions:
- The phase composition significantly influences the OSL and luminescence properties of Cu-doped Sr4Si3O8Cl4.
- Cu-doped Sr4Si3O8Cl4 demonstrates excellent OSL properties, including high sensitivity, linearity, reusability, and low fading.
- This material shows promise as an effective OSL phosphor for radiation dosimetry.
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