Cu, Li and K activated MgO: A metal oxide thermoluminescent synthesized using solution combustion technique for dosimetry

Guckan V., Altunal V., Ozdemir A., Kurt K., Yegingil Z.

JOURNAL OF LUMINESCENCE, cilt.230, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 230
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.jlumin.2020.117751
  • Dergi Adı: JOURNAL OF LUMINESCENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Chemical Abstracts Core, Communication Abstracts, INSPEC
  • Anahtar Kelimeler: Magnesium oxide, Thermoluminescence, Radioluminescence, Solution combustion, CGCD, Initial rise method, PARTICLE-SIZE, ELECTRICAL-CONDUCTIVITY, CURVE DECONVOLUTION, SINGLE-CRYSTALS, DOPED MGO, LUMINESCENCE, NANOCRYSTALS, CENTERS, PHOTOLUMINESCENCE, SCINTILLATION
  • Çukurova Üniversitesi Adresli: Evet

Özet

A newly developed copper, lithium, and potassium-activated magnesium oxide (MgO:Cu-0.001%,Li-10%,K-10%) using solution combustion synthesis (SCS) method is shown to have promise as a thermoluminescence material. Its sensitivity, dose dependence, spectral distribution of radioluminescence (RL) emission, glow curve characteristics and storage stability are found as all favorable for dosimetric purposes. The structural characterization and phase composition were checked using X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Microcrystals of MgO:Cu,Li,K were obtained by sintering material at 1200 degrees C for 4 h with a mean size of similar to 450 nm. RL studies showed that the energy traps in the samples are closely associated with two emission bands located at similar to 750 nm (dominant) and between 320 and 500 nm. It was determined that the TL signals from the stable TL peaks at 214 and 285 degrees C decreased around 6% after 4 weeks of dark storage. The kinetic parameters were determined with the computerized glow curve deconvolution (CGCD) and initial rise (IRM) methods.