Thermoluminescence analysis of beta irradiated ZnB2O4: Pr3+ phosphors synthesized by a wet-chemical method

摘要: Abstract In this paper we describe the thermoluminescence (TL) characteristics of ZnB2O4:Pr3+ phosphors with Pr concentrations varying between 0.2 and 1 mol% prepared by a wet-chemical method. The TL glow curves phosphor sample consisted three peaks located at 71 °C (P1), 124 °C (P2) 233 °C (P3). intensity increased beta dose ranging from ∼0.1 to ∼20 Gy. Dose response, reproducibility trapping parameters were evaluated clearly reveal features. We observed that P2 P3 decreases as heating rate increases. Trap estimated via Hoogenstraaten, Booth-Bohun-Parfianovitch, initial rise methods combined T m − s t o p experiment TLanal CGCD program. Heating rates varied use in Hoogenstraaten analyses. investigations on regenerated signals for P1 indicated has four electron trap levels energy values range 0.5–1.5 eV These traps have first order kinetic are formed high temperature region. Resulting utilized reference procedure calculated. figure merit (FOM) curve during fitting procedures is found be 2.019%. intensities main dosimetric appeared exhibits good linear response up 20 Gy. results provide valuable knowledge doped ZnB2O4 dosimetry research, just need eliminate low peak.