PHDS Co.
Application

Emergency Response

Definitive isotope ID at standoff, in seconds

test

Radiological and nuclear emergency response demand fast, reliable isotope identification at standoff distances. PHDS HPGe instruments provide spectroscopic identification in seconds, with onboard isotope libraries covering SNM, NORM, industrial, and medical categories.

The Fulcrum and Fulcrum-40h deliver definitive isotope identification in seconds, separating SNM and genuine threats from the NORM, medical, and industrial sources that trigger false alarms on lower-resolution detectors. With the flexibility of TAK/ATAK integration, GADRAS-compatible ID, and a versatile API, they drop into established response workflows. The Fulcrum-40h's higher efficiency extends detection to weaker, more distant sources.

The GeGI Compton, pinhole, and coded aperture imaging spectrometer locates sources spatially without requiring the operator to point toward the source in advance. Its full 360-degree Compton imaging field of view overlays source position on an optical camera image, enabling safe standoff confirmation of source location.

Instruments for this application
Fulcrum
Fulcrum
Definitive isotope ID in a portable 8-lb package, no liquid nitrogen.
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Fulcrum-40h
Fulcrum-40h
40% relative efficiency in a portable package, over 3x the standard Fulcrum.
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GeGI Gamma-Ray Imager
GeGI
Portable HPGe imaging that identifies, localizes, and quantifies any gamma-ray source.
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Related reading
Third-Party Testing
Sandia National Lab: Fulcrum-40h and ORTEC Detective-X HPGe Performance Assessment (2022)
Sandia's NNSA-funded head-to-head found the Fulcrum-40h averages at least 20% higher gamma efficiency below 300 keV than the Detective-X, with comparable energy resolution.
External report
Open report
Third-Party Testing
GeGI Imaging Measurements at a Live CBRNE Training Exercise (2016)
In a live CBRNE exercise the GeGI detected, located, and quantified Cs-137, Pu-239, depleted uranium, and HEU across six targets, including a real-time estimate of about 85 grams of U-235.
External report
Open report
Third-Party Testing
Radioactive Threat Vision via Quantitative Gamma-Ray Imaging (2016)
This PHDS paper argues that compact high-resolution gamma imagers let CBRNE teams map source location, identity, and quantity from safe standoff, replacing semi-random detector search.
External report
Open report
Third-Party Testing
GeGI Performance in a Maritime Interdiction Operation (Lawrence Livermore National Laboratory, 2014)
This LLNL report assesses GeGI performance in a maritime interdiction operation scenario, evaluating the portable HPGe gamma imager for shipboard search and localization of nuclear material.
External report
Open report
Next steps

Need HPGe for emergency response applications?

Our application engineers can confirm detector performance for your specific isotopes, walk through measurement geometry requirements, and recommend the right configuration.

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