INSTRUMENTAL TECHNIQUE FOR THE DETECTION AND IDENTIFICATION OF RADIOACTIVE, FISSILE AND EXTRA HAZARDOUS SUBSTANCES
The threat of terrorism and organized crime activity all over the world demands the development of hazardous substances detection techniques. The branch of atomic science and nuclear engineering radiation technique is promising for many practical tasks of detection and identification of radioactive, fissible and extrahazardous substances. To detect and identify them minding their physical nature and properties, it is worthwhile to employ passive and nuclear-physical techniques. At present a number of mobile and transportable systems used to detect lost gamma radiation sources have been designed and tested. RITPA is among those who implemented the above approaches, that has become possible due to the development of new types of counters. Active techniques are successfully employed for quantitative analysis of nuclear fuel in products. This technique is the base one and reliable to ensure metering and testing and the inspection by IAEA specialists. To analyse the composition of material, RITPA produces portable X-ray fluorescence equipment of RLP type that allows us to determine toxic materials and identify materials at the site of an explosion. The device is designed in the shape of a case and has an X-ray tube with autonomous power supply. The detection threshold is 0.1 ppm. We offer to employ method of computer tomography with diffused radiation to solve special tasks to detect and identify explosive gelatine in the condition of one-sided access. The present state of developments features qualitative shifts in the equipment due to the use of computers, the employment of improved gauges and radiation detectors, the optimization of characteristics and power of X-ray that allows us to significantly improve accuracy, sensitivity, efficiency and to use the received data for automatic testing.
terrorism threat hazardous substances detection radioactive fissile materials
Nikolay R. KUZELEV I.N. IVANOV Vyacheslav M. YUMASHEV
Research Institute of Technical Physics and Automation VNIITFA, Moscow, Russia
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
69-73
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）