Abstract

This study analyses the ambient dose equivalent around transmission full-body scanners used in Brazilian prisons and airports. In order to achieve this goal, three transmission full-body scanners of the same model assembled by a Brazilian manufacturer were evaluated. Ambient dose equivalent rates were measured at several positions around these screening devices with the help of an ionisation chamber made by Ludlum, model 9DP. These systems consist of an X-ray generator with three distinct modes of operation, each with a unique value for maximum energy (100, 150 and 160 keV) and current (0.4, 0.5 and 0.9 mA). Results show the integrated dose per scan at each of the measurement positions considered, presenting values for ambient dose equivalent with and without an individual being scanned, in order to take into account the scattering due to the presence of a human body.

中文翻译：

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等效剂量周围透射全辐射仪的评估。

摘要

这项研究分析了巴西监狱和机场使用的全身透射扫描仪周围的等效环境剂量。为了实现这一目标，对巴西制造商组装的三台相同型号的透射式全身扫描仪进行了评估。在9DP型Ludlum制造的电离室的帮助下，在这些筛选设备周围的几个位置测量了环境剂量当量率。这些系统由X射线发生器组成，该发生器具有三种不同的工作模式，每种模式都有一个唯一的值，以表示最大能量（100、150和160 keV）和电流（0.4、0.5和0.9 mA）。结果显示了在所考虑的每个测量位置上每次扫描的累积剂量，给出了有或没有被扫描个体时的等效环境剂量值，