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US DOE/NNSA Aerial Survey of Washington, DC

Published by National Nuclear Security Administration | Department of Energy | Metadata Last Checked: August 03, 2025 | Last Modified: 2014-10-30
The enclosed package represents radiation data collected with a helicopter over Washington, DC in 2013. The data were collected with an array of large thallium activated sodium iodide (NaI(Tl)) crystals and associated readout electronics to produce time and location referenced measurements. These results represent raw data that have been calibrated to physical units and validated. They do not include any further evaluation.

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