Optically stimulated luminescence in doped NaF

OSL in doped NaF is studied. Study shows that NaF:Mg,Cu,P phosphor possess good OSL properties having sensitivity comparable to that of commercially available Al₂O₃:C (Landauer Inc.). For the luminescence averaged over 3 s the obtained OSL is 37% of that commercial available Al₂O₃:C. Of the several phosphors investigated, phosphor with impurities concentration Mg(0.01 mol%), Cu(0.2 mol%), P(1 mol%) shows good OSL sensitivity good linearity in the 10 mGy to 1 Gy dose range and negligible fading. This sample shows a intense single TL peak around 350 °C which gets depleted by 14% after the OSL readout. This imply that maximum OSL is coming from deep traps giving stability to the signal. The ease of preparation along with other good OSL properties will make this phosphor suitable for radiation dosimetry applications using OSL. - Highlights: • NaF:Mg,Cu,P shows good OSL properties. • The OSL sensitivity is 37% to that of commercially available Al₂O₃:C. • The sample possesses good linearity in the dose range 10 mGy to 1 Gy. • Negligible fading is observed during first 10 days.