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A citizen's dosimeter, and it fits in your wallet
Date:7/1/2011

No matter how many plastic cards currently crowd your wallet, one day you may wish to make room for one more. The Department of Homeland Security(DHS)'s Science and Technology Directorate (S&T) has developed a miniaturized version of a dosimeter, a portable device used for measuring exposure to ionizing radiation, which can provide life-saving early detection in the unlikely event of a nuclear accident or dirty bomb.

Dubbed the Citizen's Dosimeter, this high-tech plastic card would be as convenient and affordable as a subway card, with the capability to measure the amount of radiation on a person or in a given area.

The National Urban Security Technologies Laboratory (or NUSTL, pronounced new STEEL) located in New York City and managed by DHS S&T, has been awarded a patent that covers the development of radiation dosimetry technologies DHS's first patent.

Currently, personal radiation dosimeter badges are worn in nuclear plants, but a plant dosimeter cannot be read on the spot; it must be sent to a processing lab to determine an individual's radiation dose. While a final prototype has not yet been built, a workable blueprint for a wallet-sized card that can detect radiation in real time is now in place.

"We were inspired by the Metro cards we use every day to get around Manhattan, and envisioned a dosimeter with that level of convenience," says Gladys Klemic, a NUSTL physicist who managed the project from Illinois. Klemic believes a dosimeter in this form could benefit both emergency responders and the general public.

Klemic and her team at NUSTL set out to create a dosimeter that would meet American National Standards Institute (ANSI) requirements for personal radiation dosimeter badges, and incorporate commercially available components to decrease the size and lower the price tag.

NUSTL began by using radiation-sensitive material from Landauer, Inc., a commercial dosimetry provider in Illinois, test
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Contact: John Verrico
john.verrico@dhs.gov
202-254-2385
US Department of Homeland Security - Science and Technology
Source:Eurekalert  

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