Thermoluminescence dose Response Study of Natural Salt (NaCl:Cu,Mg,Mn,O,Cu,As) obtained from Mizoram, India

This paper reports the dose response study of natural salt (local name Dap Chi) extracted from salty water sources in Mizoram, India. XRD and SEM of the sample were done and TL studies have been carried out using TLD reader TL1009I and sample was irradiated with gamma radiation using Theratron machine fitted with cobalt-60 source. Chen and Mckeever method has been applied to analyze linearity, sub-linearity and super linearity properties of the sample. The corrections for zero dose reading were done. The fifth degree polynomial dose responses had also been investigated. From the investigations, it may be concluded that the natural salt extracted from Mizoram shows a linear dose response in the range of 0.5 Gy ? 2.0 Gy and may be a candidate for low radiation dose-meter, however further studies are needed for confirmation in this regard.