2026-10-25T22:07:34Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/00007058 2021-12-13T01:57:02Z 1607925118212 1607925118212:1608025636517 user-mub

Investigation of Leaf Water Content Using Transmission Method Khin Thitsar Shin Oak Kar Shin This investigation is the water content of betel (Piper Betel Linn) leaves have been determined based on their mass attenuation characteristics to beta particles. The transmitted intensities and mass attenuation coefficient for particles of 90Sr radioactive source with end point energy 0.546MeV is used as beta emitters. The Geiger Muller Counter is used as detector through the fresh and dry leaves of the different thickness are measured of beta attenuation for betel leaf sample. These parameters vary as the amount of water content in selected leaves gets changed. The mass attenuation coefficient is obtained as the slope of leaf thickness versus logarithm of relative transmission intensity. The transmission intensity decreases with increase of water amount in plant leaves. For leaf thickness versus logarithm of relative transmission intensity provides the attenuation coefficient. The measured value of mass attenuation coefficient agrees well with that calculated from statistical regression method. Also, the percentage water content values are determined using beta attenuation and found to be in close agreement with direct weighing. 2020-12-01 http://hdl.handle.net/20.500.12678/0000007058 https://meral.edu.mm/records/7058