We present measured data on the neutron detection response of the GammaTracker handheld radioisotope identifier. Two neutron detection modes are discussed: measuring absorption gamma rays from the cadmium present in the Cd-Zn-Te spectrometers, and measuring the absorption gamma rays from moderator material present in the environment. In both cases, the capture gamma rays can be imaged to help locate a shielded neutron source. In this work, we discuss the total neutron detection efficiency of the GammaTracker instrument, and we present measured images of shielded neutron sources. Prospects for gamma-ray rejection are discussed.
Revised: August 20, 2009 |
Published: August 28, 2008
Citation
Seifert C.E., D.S. Barnett, and M.J. Myjak. 2008.Prospects for Thermal Neutron Detection and Imaging with the GammaTracker Handheld Radioisotope Identifier. In Proceedings of the SPIE: Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X, edited by A Burger, LA Franks, RB James, 7079, Art. No. 707907. Bellingham, Washington:SPIE.PNNL-SA-61654.doi:10.1117/12.798795