2026-10-25T01:16:40Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/00008439 2022-12-02T08:50:36Z 1582963788001:1582966489046

"An Analysis of Stay Time for Gamma Ray Dose Rate in Aluminum at Nuclear Physics Laboratory" Hnin Thidar Soe Htoo Htoo Win Nanda Phone Lin Wai "Radiation is energy transmitted through space in the form of electromagnetic waves or energetic particles. Radiation protection is the science and practice of protecting people and the environment from the harmful effects of ionizing radiation. In this research, the analysis of gamma ray dose rate with time changes in aluminum and staying time were determined at Nuclear Physics Laboratory. The detector was used NaI (Tl) scintillation detector with gamma ray sources of 137Cs and 60Co of activity 1μCi. It was found that longer detection time is increased in average intensities. Then the comparison of dose rate and stay time for different gamma energies can be seen that more dose rate values of high energy in medium have less stay time and the safety limit of time taken for 137Cs has about 30 minutes and 60Co has about 20 minutes. From this experiment, the uses of all radioactive sources have activity of about 1 μCi. It is small amount of activity in research process but long stay with them; it can be dangerous on the researcher." 2022-08-12 https://meral.edu.mm/records/8439