Synthesis and luminescence characterization of microcrystalline Nd-doped calcium sulfate

Yüksel M., Doğan T., Portakal Z. G., Topaksu M.

APPLIED RADIATION AND ISOTOPES, cilt.148, ss.197-203, 2019 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 148
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.apradiso.2019.04.005
  • Dergi Adı: APPLIED RADIATION AND ISOTOPES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.197-203
  • Anahtar Kelimeler: Luminescence, CaSO4:Nd, XRD, SEM, Dose response, Preheat effect, Heating rate, HEATING RATE, THERMOLUMINESCENCE CHARACTERISTICS, DOSE DEPENDENCE, GLOW CURVES, CASO4, TL, PHOTOLUMINESCENCE, PARAMETERS, DOSIMETERS, MECHANISMS
  • Çukurova Üniversitesi Adresli: Evet

Özet

In the present study, the precipitation method was used to synthesize microcrystalline Nd-doped CaSO4 phosphor. Structural and morphological analysis of the phosphor samples were performed by using X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods. In addition, luminescent properties of the samples were characterized by thermoluminescence (TL) and optically stimulated luminescence (OSL) methods. The results of XRD analysis and SEM images showed that the prepared CaSO4:Nd powder samples have an orthor-hombic crystal structure and almost spherical in size with an average between 3 and 17 mu m. In the light of the luminescence analysis, the optimum preheat temperature required to evacuate the low temperature electron traps was determined as 170 degrees C. It was also presented that CaSO4:Nd samples have the potential to be used as a dosimetric material with a linear dose sensitivity between 1 and 20 Gy (as TL dosimeter), and 1 and 10 Gy (as an OSL dosimeter) when they are exposed to beta irradiation. In addition, the full width at the half maximum (FWHM) values of the main TL peaks presented no independence of HR.