A three-dimensional look-up library consisting of simulated gamma-ray spectra was developed to leverage, in real-time, the abundance of data provided by a helicopter-mounted gamma-ray detection system consisting of 92 CsI-based radiation sensors and exhibiting a highly angular-dependent response. We have demonstrated how this library can be used to help effectively estimate the terrestrial gamma-ray background, develop simulated flight scenarios, and to localize radiological sources. Source localization accuracy was significantly improved, particularly for weak sources, by estimating the entire gamma-ray spectra while accounting for scattering in the air, and especially off the ground.
Revised: November 7, 2017 |
Published: January 21, 2018
Citation
Kulisek J.A., R. Wittmann, E.A. Miller, W.J. Kernan, J.D. McCall, R.J. McConn, and J.E. Schweppe, et al. 2018.A 3D Simulation Look-Up Library for Real-Time Airborne Gamma-Ray Spectroscopy.Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment 879.PNNL-SA-113390.doi:10.1016/j.nima.2017.10.030