Validation of a novel radiation mapping platform for the reduction of operator-induced shielding effects.
Validation of a novel radiation mapping platform for the reduction of operator-induced shielding effects.
复制标题
验证新型辐射测绘平台，以减少操作员引起的屏蔽效应。
DOI：
10.1088/1361-6498/aad5f2
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Martin PG
中科院分区：
文献类型：
--
作者：
Martin PG
由于福岛第一核电站事故目前正在进行广泛的补救，因此更有必要提供一种系统，利用该系统可以在高(米或亚米)空间分辨率下快速确定辐射(特别是放射性铯)在大片地区的分布。虽然已经利用了一系列可能的调查方法(例如固定翼飞机、直升机、车辆和最近的无人驾驶飞行器)来描述放射性污染的分布，但使用人工操作人员遍历感兴趣的地点的地面(徒步)方法仍然是进行常规放射性现场调查的主要方法之一。通过应用新开发的平台作为背包携带的单元，可以以以前可能的两倍速度绘制地点地图-不仅减少了操作员对电离辐射的暴露时间，而且显著降低了(操作员引入的)探测器上的辐射衰减水平。就像地质找矿中使用的磁测量平台一样，这个系统也是以吊杆为基础的，从中央操作员的侧面延伸出来。虽然传统的放射调查平台需要对数据进行校正，以说明航母(航空器、车辆或人员)拦截和衰减入射辐射--但该系统被证明不需要这种追溯校正。
With extensive remediation currently ongoing because of the Fukushima Daiichi Nuclear Power Plant accident, there exists the even greater need to provide a system with which the distribution of radiation (specifically radiocesium) can be rapidly determined across extensive areas, yet at high (metre or sub-metre) spatial resolutions. Although a range of potential survey methods have been utilised (eg fixed-wing aircraft, helicopter, vehicular and more-recently unmanned aerial vehicle) to characterise the distribution of radiological contamination, ground-based (on-foot) methods that employ human operatives to traverse sites of interest remains one of the primary methods through which to perform routine radiological site surveys. Through the application of a newly-developed platform carried as a backpack-contained unit, it was possible to map sites at twice the rate previously possible—reducing not only the exposure time of the operator to ionising radiation, but also dramatically reducing the level of radiation attenuation (introduced by the operator) onto the detector. Like magnetometry platforms used during geological ore prospecting, this system was similarly boom-based, extending sideways away from the central operator. While conventional radiological survey platforms require a correction be performed on the data to account for the carrier (aircraft, vehicle or human) interception and attenuation incident radiation—this system is shown to not require such a retrospective correction.