Our Portfolio: Sensors Projects

CMST Technology Index | Characterization and Sensors | DDFA

Ground-Based Laser Induced Fluorescence Imaging for Real-Time
On-Site Measurement of Radioactive Constituents in Facilities

Information
Resources

Technology
Summary Sheet

Technology
Summary Book

Images

D & D Focus Area page

 

Tech ID: 1999
Project Overview
 The Fiscal Year (FY) 2000 work scope consists of ensuring that the backpack portable Laser-Induced Fluorescence Imaging (LIFI) unit is ready for implementation to U.S. Department of Energy (DOE) Deactivation & Decommissioning (D&D) sites that have requirements for uranium survey characterization. Needs which may be effectively addressed by the LIFI unit include characterization of interior and exterior surfaces at sites that have been used for uranium processing or storage and of scrap components from such sites.

Technology Description
 Laser-induced fluorescence uses light to stimulate optical emission in materials. Laser-induced fluorescence imaging (LIFI) uses this principle to generate images in real time. The technique is a surface survey capability, as the light directly excites the uranium +6 valence oxide [U (VI)]. In the case of uranium oxide detection, the green emission is phosphorescent, allowing for discrimination from background fluorescence by time gating. The surface contamination data are displayed as a real-time, false color image that is stored as a digital file on a removable PC card. The portable system will provide real-time analysis permitting timely decisions to be made at the survey site.

Return to Top