钚质量的量热法测量

Mass Measurement of Plutonium With Calorimetric Method

摘要: 量热计是核保障领域中核材料衡算非破坏性直接测量最方便和最准确的仪器之一。本工作应用一种测量钚的热功率范围为0.1～15 W的量热计测量了3个²³⁸Pu含量已知的钚样品。²³⁸Pu质量测量值与参考值相对偏差均在-1.7%以内。

Abstract: In nuclear safeguards field, calorimeter is one of the most accurate and convenient nondestructive instruments for nuclear material accountancy. A calorimeter designed to measure plutonium in storage containers with thermal powers ranging from 0.1 to 15 W was used to measure the mass of ²³⁸Pu in three samples. Measured results show that the relative deviation between the measured ²³⁸Pu mass and standard reference ²³⁸Pu mass in samples of ²³⁸Pu is -1.7%.