KEVLAR (R) AS A POTENTIAL ACCIDENT RADIATION DOSIMETER FOR FIRST RESPONDERS, LAW ENFORCEMENT AND MILITARY PERSONNEL

摘要

Today the armed forces and law enforcement personnel wear body armor, helmets, and flak jackets composed substantially of Kevlar (R) fiber to prevent bodily injury or death resulting from physical, ballistic, stab, and slash attacks. Therefore, there is a high probability that during a radiation accident or its aftermath, the Kevlar (R)-composed body armor will be irradiated. Preliminary study with samples of Kevlar (R) foundation fabric obtained from body armor used by the U.S. Marine Corps has shown that all samples evaluated demonstrated an EPR signal, and this signal increased with radiation dose. Based on these results, the authors predict that, with individual calibration, exposure at dose above 1 Gy can be reliably detected in Kevlar (R) samples obtained from body armor. As a result of these measurements, a post-event reconstruction of exposure dose can be obtained by taking various samples throughout the armor body and helmet worn by the same irradiated individual. The doses can be used to create a whole-body dose map that would be of vital importance in a case of a partial body or heterogeneous exposure.