Determination and comparison of attenuation coefficients of soils from Loikaw, Kayah State and Ohn-chaw, Mandalay Division

Soil samples were collected from the two different places of the agricultural fields in Kayah State and Mandalay Region. In this research, we determined the attenuation coefficients of soils by gamma transmission measurement. The result of attenuation coefficients are 1.1cm-1 and 1.155cm-1 for 137Cs and 0.63cm-1 and 0.67cm-1for 60Co respectively. We also calculated the mass attenuation coefficients, m. Then the result, were compared with the values of Latur and Usmanabad district from Maharashtra, India. The average result of coefficients two soils was nearly the same as that of India soils. So, these soil samples are obeyed the gamma ray attenuation law and technique allows the determination of coefficients of soil with good accuracy