Neutron-Capture Prompt Gamma-Ray Activation Analysis: Multi-Element Measurements on Various Materials
A beam port was installed at the National Bureau of Standards (NBS) reactor to initiate studies of a new analytical technique: neutron-capture prompt γ-ray activation analysis (PGAA). A detection system based on a large, high resolution Ge(Li) detector surrounded by a NaI crystal is used for measurement of prompt γ rays from 80 keV to 11 MeV. Gamma-ray spectra of many pure elements and simple compounds were collected to select appropriate lines for analysis and to determine interferences. Several NBS Standard Reference Materials and other types of samples have been investigated. About fourteen elements have been determined in most samples, including H, B, C, N, Na, Al, Si, S, Cl, K, Ca, Ti, V, Mn, Fe, Cd, Sm and Gd.
KeywordsPulse Height Analyzer Compton Suppression Beam Tube Beam Port Neutron Beam Facility
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