论文部分内容阅读
本文叙述了一套人肺中钚积沉量体外测量装置,该装置是对原有装置的改进。用四个大面积薄碘化钠闪烁探测器(二个为φ100×1毫米,另二个为φ100×2毫米)分别置于胸腔上方及左、右两侧进行肺中钚测量;用两个φ100×100毫米碘化钠闪烁探测器测量人体中裂变核素负荷量,并从肺中钚测量数据中扣除体内裂变核素的干扰。依照三倍本底标准偏差估计肺中钚测量的灵敏度为10.2纳居里(毫微居里),体内裂变核素测量的灵敏度为10~(-2)微居里量级。
This article describes a set of human lung plutonium deposition in vitro measurement device, the device is an improvement on the original device. Four large areas of thin sodium iodide scintillation detector (two φ100 × 1 mm, the other two φ100 × 2 mm) were placed above the chest and left and right sides of the lung plutonium measurement; with two A φ100 × 100 mm sodium iodide scintillation detector measures the amount of fission nuclide loaded in the body and subtracts the fission nuclide interference from plutonium measurements in the lung. The sensitivity of plutonium measurements in lungs was estimated to be 10.2 nm (neutrino) based on three-fold background standard deviation, and the sensitivity of in vivo fissile nuclide measurements was on the order of 10 -2 (2).