Prompt Gamma Neutron Activation Analysis (PGNAA) and Pulsed Fast Thermal Neutron Activation (PFTNA) are non-contact, non-destructive analytical techniques used in online analysis systems to determine the elemental composition of bulk raw materials.
Both PGNAA and PFTNA techniques are known collectively as neutron activation analysis and function by bombarding materials with neutrons. Neutrons interact with elements in the materials, which then emit secondary, prompt gamma rays that can be measured. Neutrons are highly penetrating and pass through and interact with the entire contents of material providing a representative analysis. This is advantageous because other techniques for analysis are only surface analysis techniques and not representative of the entire material stream.
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