Results 1 - 10 of 1223
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[en] This study defines the parameters of the threat to safeguards systems posed by the white-collar adversary who uses complex schemes employing guile and deception rather than force, to attempt diversion of nuclear materials. Its aim has been to explore the potential capabilities and dangers presented by this adversary both in terms of the specific attributes of the threat he poses, and in light of the unique regulatory structure and evolutionary development of the civilian nuclear field
[en] The IAEA methodology of the Illicit Trafficking database analyses general and specific risks, trends and patterns. This methodology assist in identification of security needs that are specific to material , activity , location ,country or even regional.Finally the methodology also analyses the lessons learned.
[en] The detection of fissile mass and radioactive material in illicit traffic has been the object of intensive development these last years. Large surface detectors are now used mainly designed on the base of plastic scintillators. The use of large plastic scintillators have led to high efficiency of detection allowing the possibility to reach low detection limits in short time of measurements. This paper presents the possibilities of the latest developments and is focused on the comparison between ideal conditions of measurement and more realistic conditions. In particular the impact of screens, matrix, shielding and mixture of radioactive material is analyzed regarding the probability of non detection and false alarm. The difficulties in differentiation of natural, medical, licit and illicit transportation is also tackled
[en] Advances in technology are leading to an increase in the number of applications that use optical radiation sources in the UK. One example is the use of sources of ultraviolet (UV) radiation for the detection of index security marking solutions used in crime detection. EU Member States have until the 27 April 2010 to implement the requirements of the Physical Agents (Artificial Optical Radiation) Directive (2006/25/EC) into national law. The Health and Safety Executive (HSE) are leading UK Government action to develop implementing regulations, carry out impact assessments and consult with stakeholders in relation to this Directive. The aim of the project described in this paper was to examine the types of static equipment in use at police custody suites and the protective measures to control employees', and in particular examining officers, exposure to UV radiation. Visits made to a sample number of custody suites within UK police stations identified differences in the protective measures being implemented to control UV radiation exposure. The project was a qualitative review of equipment and use. Radiation emission measurements and exposure assessments were not undertaken. (author)
[en] The proton-induced X-ray emission (PIXE) technique was applied to the identification and analysis of gunshot residues. Studies were made of the type of bullet and bullet hole identification, firearm discharge element profiles, the effect of various target backings, and hand swabbings. The discussion of the results reviews the sensitivity of the PIXE technique, its nondestructive nature, and its role in determining the distance from the gun to the victim and identifying the type of bullet used and whether a wound was made by a bullet or not. The high sensitivity of the PIXE technique, which is able to analyze samples as small as 0.1 to 1 ng, and its usefulness for detecting a variety of elements should make it particularly useful in firearms residue investigations