Coincidence Prompt Gamma-Ray Neutron Activation Analysis
The normal prompt gamma-ray neutron activation analysis for either bulk or small beam samples inherently has a small signal-to-noise (S/N) ratio due primarily to the neutron source being present while the sample signal is being obtained. Coincidence counting offers the possibility of greatly reducing or eliminating the noise generated by the neutron source. The present report presents our results to date on implementing the coincidence counting PGNAA approach. We conclude that coincidence PGNAA yields: (1) a larger signal-to-noise (S/N) ratio, (2) more information (and therefore better accuracy) from essentially the same experiment when sophisticated coincidence electronics are used that can yield singles and coincidences simultaneously, and (3) a reduced (one or two orders of magnitude) signal from essentially the same experiment. In future work we will concentrate on: (1) modifying the existing CEARPGS Monte Carlo code to incorporate coincidence counting, (2) obtaining coincidence schemes for 18 or 20 of the common elements in coal and cement, and (3) optimizing the design of a PGNAA coincidence system for the bulk analysis of coal.
- Research Organization:
- North Carolina State University (US)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- FG07-99ID13775
- OSTI ID:
- 806598
- Report Number(s):
- DOE/ID/13775; TRN: US200304%%106
- Resource Relation:
- Other Information: PBD: 10 Nov 2002
- Country of Publication:
- United States
- Language:
- English
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