2026-03-14T09:57:09Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/260 2021-12-13T04:54:30Z 1582963788001:1582966489046 user-ydbu

Assessment of Radiological Risk of Sediment Samples from 7mile Mini Beach, Doathtawati River Mandalay Region Aye Aye Mar The main purpose of this research work is to investigate the natural radiological hazard of sediment samples from Doathtiwati River, near Mandalay city. The sediment samples were collected from five different places in 7 mile mini beach, Mandalay, have been investigated by Gamma Spectroscopy. The collected sediment samples were measured by NaI (Tl) detector and analyzed by gamma vision 32 software. The some natural radionuclides are present in all sediment samples. The natural radionuclides such as 208Tl (75.77keV), 212Pb (238.63keV), 214Pb (351.93keV) and 208Tl (583.19keV) were identified. According to the analyzed data, the radionuclide 208Tl (75.77keV) concentration is the highest value in all the radionuclides of sediment samples. According to the value of external hazard index and absorbed dose rate, it is in the good agreement for the recommended value of UNSCEAR 2000, Hex <1. So, it can be assumed that it is not hazard to the surrounding. 2019 http://hdl.handle.net/20.500.12678/0000000260 https://meral.edu.mm/records/260