Chuong Huynh Dinh, My Le Nguyen Thi, Tam Hoang Duc
Nuclear Technique Laboratory, VNUHCM-University of Science, Ho Chi Minh City, Viet Nam.
Faculty of Applied Sciences, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City, Viet Nam.
Appl Radiat Isot. 2019 Oct;152:109-114. doi: 10.1016/j.apradiso.2019.07.005. Epub 2019 Jul 4.
In this study, we developed a new method for determining the density of liquids using the Compton backscattering technique. The principle of this method is based on the change in the area under a single scattering peak versus the liquid density. The linear calibration curve of the ratio R versus the density is required to determine the density of an unknown liquid (R is the ratio of the area under a single scattering peak for a liquid relative to that for water). In the proposed method, the calibration curve is completely constructed based on a simulation using the MCNP5 code. The method involves combining a simulation with an experiment as a semi-empirical method. Using this method, we determined the density of four liquids comprising acetonitrile, glycerol, nitric acid, and sulfuric acid, and the maximum deviations between the reference densities and measured values were less than 1.4%, except in the case of sulfuric acid, which was approximately 4.5%. The results obtained in this study strongly suggest that the proposed method is suitable and feasible for application.
在本研究中，我们开发了一种利用康普顿背散射技术测定液体密度的新方法。该方法的原理基于单个散射峰下面积随液体密度的变化。为了确定未知液体的密度，需要比值R与密度的线性校准曲线（R是液体单个散射峰下面积与水的单个散射峰下面积之比）。在所提出的方法中，校准曲线完全基于使用MCNP5代码的模拟构建。该方法涉及将模拟与实验相结合作为一种半经验方法。使用这种方法，我们测定了包括乙腈、甘油、硝酸和硫酸在内的四种液体的密度，除硫酸的最大偏差约为4.5%外，参考密度与测量值之间的最大偏差小于1.4%。本研究获得的结果有力地表明，所提出的方法适用于实际应用且可行。
